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Finding the Fourth Proportional to 66,446,805.80, 99,670,208.70 and 62,407,854.20

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Solution

The fourth proportional to 66,446,805.80, 99,670,208.70 and 62,407,854.20 is: 93,611,781.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,446,805.80 : 99,670,208.70 = 62,407,854.20 : x
  2. Step 2: Convert to fraction form
    66,446,805.80/99,670,208.70 = 62,407,854.20/x
  3. Step 3: Cross multiply
    66,446,805.80x = 99,670,208.70 × 62,407,854.20
  4. Step 4: Simplify right side
    66,446,805.80x = 6,220,203,852,633,172
  5. Step 5: Solve for x
    x = 6,220,203,852,633,172/66,446,805.80
  6. Step 6: Final answer
    x = 93,611,781.30

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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.