Home / 66,566,657.20-99,849,985.80-53,129,729.20

Finding the Fourth Proportional to 66,566,657.20, 99,849,985.80 and 53,129,729.20

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Solution

The fourth proportional to 66,566,657.20, 99,849,985.80 and 53,129,729.20 is: 79,694,593.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,566,657.20 : 99,849,985.80 = 53,129,729.20 : x
  2. Step 2: Convert to fraction form
    66,566,657.20/99,849,985.80 = 53,129,729.20/x
  3. Step 3: Cross multiply
    66,566,657.20x = 99,849,985.80 × 53,129,729.20
  4. Step 4: Simplify right side
    66,566,657.20x = 5,305,002,706,177,845
  5. Step 5: Solve for x
    x = 5,305,002,706,177,845/66,566,657.20
  6. Step 6: Final answer
    x = 79,694,593.80

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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.