Home / 66,429,108.90-99,643,663.35-40,786,971.30

Finding the Fourth Proportional to 66,429,108.90, 99,643,663.35 and 40,786,971.30

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Solution

The fourth proportional to 66,429,108.90, 99,643,663.35 and 40,786,971.30 is: 61,180,456.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,429,108.90 : 99,643,663.35 = 40,786,971.30 : x
  2. Step 2: Convert to fraction form
    66,429,108.90/99,643,663.35 = 40,786,971.30/x
  3. Step 3: Cross multiply
    66,429,108.90x = 99,643,663.35 × 40,786,971.30
  4. Step 4: Simplify right side
    66,429,108.90x = 4,064,163,237,283,311.50
  5. Step 5: Solve for x
    x = 4,064,163,237,283,311.50/66,429,108.90
  6. Step 6: Final answer
    x = 61,180,456.95

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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.