Home / 66,588,713,070.72-99,878,045,963.19-21,207,587,384.98

Finding the Fourth Proportional to 66,588,713,070.72, 99,878,045,963.19 and 21,207,587,384.98

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Solution

The fourth proportional to 66,588,713,070.72, 99,878,045,963.19 and 21,207,587,384.98 is: 31,809,781,116.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,588,713,070.72 : 99,878,045,963.19 = 21,207,587,384.98 : x
  2. Step 2: Convert to fraction form
    66,588,713,070.72/99,878,045,963.19 = 21,207,587,384.98/x
  3. Step 3: Cross multiply
    66,588,713,070.72x = 99,878,045,963.19 × 21,207,587,384.98
  4. Step 4: Simplify right side
    66,588,713,070.72x = 2,118,172,387,605,663,973,376
  5. Step 5: Solve for x
    x = 2,118,172,387,605,663,973,376/66,588,713,070.72
  6. Step 6: Final answer
    x = 31,809,781,116.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.