Home / 42,531,812.80-63,797,719.20-19,815,006.40

Finding the Fourth Proportional to 42,531,812.80, 63,797,719.20 and 19,815,006.40

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Solution

The fourth proportional to 42,531,812.80, 63,797,719.20 and 19,815,006.40 is: 29,722,509.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,531,812.80 : 63,797,719.20 = 19,815,006.40 : x
  2. Step 2: Convert to fraction form
    42,531,812.80/63,797,719.20 = 19,815,006.40/x
  3. Step 3: Cross multiply
    42,531,812.80x = 63,797,719.20 × 19,815,006.40
  4. Step 4: Simplify right side
    42,531,812.80x = 1,264,152,214,253,402.75
  5. Step 5: Solve for x
    x = 1,264,152,214,253,402.75/42,531,812.80
  6. Step 6: Final answer
    x = 29,722,509.60

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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.