Home / 72,585,487.20-108,878,230.80-66,314,920.80

Finding the Fourth Proportional to 72,585,487.20, 108,878,230.80 and 66,314,920.80

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Solution

The fourth proportional to 72,585,487.20, 108,878,230.80 and 66,314,920.80 is: 99,472,381.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,585,487.20 : 108,878,230.80 = 66,314,920.80 : x
  2. Step 2: Convert to fraction form
    72,585,487.20/108,878,230.80 = 66,314,920.80/x
  3. Step 3: Cross multiply
    72,585,487.20x = 108,878,230.80 × 66,314,920.80
  4. Step 4: Simplify right side
    72,585,487.20x = 7,220,251,252,346,120
  5. Step 5: Solve for x
    x = 7,220,251,252,346,120/72,585,487.20
  6. Step 6: Final answer
    x = 99,472,381.20

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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.