Home / 39,930,068-55,103,493.80-21,595,353.48

Finding the Fourth Proportional to 39,930,068, 55,103,493.80 and 21,595,353.48

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Solution

The fourth proportional to 39,930,068, 55,103,493.80 and 21,595,353.48 is: 29,801,587.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,930,068 : 55,103,493.80 = 21,595,353.48 : x
  2. Step 2: Convert to fraction form
    39,930,068/55,103,493.80 = 21,595,353.48/x
  3. Step 3: Cross multiply
    39,930,068x = 55,103,493.80 × 21,595,353.48
  4. Step 4: Simplify right side
    39,930,068x = 1,189,979,426,593,988.50
  5. Step 5: Solve for x
    x = 1,189,979,426,593,988.50/39,930,068
  6. Step 6: Final answer
    x = 29,801,587.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.