Home / 66,921,621.60-100,382,432.40-39,981,410.40

Finding the Fourth Proportional to 66,921,621.60, 100,382,432.40 and 39,981,410.40

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Solution

The fourth proportional to 66,921,621.60, 100,382,432.40 and 39,981,410.40 is: 59,972,115.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,921,621.60 : 100,382,432.40 = 39,981,410.40 : x
  2. Step 2: Convert to fraction form
    66,921,621.60/100,382,432.40 = 39,981,410.40/x
  3. Step 3: Cross multiply
    66,921,621.60x = 100,382,432.40 × 39,981,410.40
  4. Step 4: Simplify right side
    66,921,621.60x = 4,013,431,226,734,657
  5. Step 5: Solve for x
    x = 4,013,431,226,734,657/66,921,621.60
  6. Step 6: Final answer
    x = 59,972,115.60

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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.