Home / 66,429,705.40-99,644,558.10-21,005,423.80

Finding the Fourth Proportional to 66,429,705.40, 99,644,558.10 and 21,005,423.80

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Solution

The fourth proportional to 66,429,705.40, 99,644,558.10 and 21,005,423.80 is: 31,508,135.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,429,705.40 : 99,644,558.10 = 21,005,423.80 : x
  2. Step 2: Convert to fraction form
    66,429,705.40/99,644,558.10 = 21,005,423.80/x
  3. Step 3: Cross multiply
    66,429,705.40x = 99,644,558.10 × 21,005,423.80
  4. Step 4: Simplify right side
    66,429,705.40x = 2,093,076,172,254,222.75
  5. Step 5: Solve for x
    x = 2,093,076,172,254,222.75/66,429,705.40
  6. Step 6: Final answer
    x = 31,508,135.70

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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.