Home / 72,039,665.97-108,102,535.92-66,178,648.53

Finding the Fourth Proportional to 72,039,665.97, 108,102,535.92 and 66,178,648.53

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Solution

The fourth proportional to 72,039,665.97, 108,102,535.92 and 66,178,648.53 is: 99,307,508.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,039,665.97 : 108,102,535.92 = 66,178,648.53 : x
  2. Step 2: Convert to fraction form
    72,039,665.97/108,102,535.92 = 66,178,648.53/x
  3. Step 3: Cross multiply
    72,039,665.97x = 108,102,535.92 × 66,178,648.53
  4. Step 4: Simplify right side
    72,039,665.97x = 7,154,079,729,851,380
  5. Step 5: Solve for x
    x = 7,154,079,729,851,380/72,039,665.97
  6. Step 6: Final answer
    x = 99,307,508.35

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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.