Home / 52,013.18-71,778-28,139.86

Finding the Fourth Proportional to 52,013.18, 71,778 and 28,139.86

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Solution

The fourth proportional to 52,013.18, 71,778 and 28,139.86 is: 38,832.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,013.18 : 71,778 = 28,139.86 : x
  2. Step 2: Convert to fraction form
    52,013.18/71,778 = 28,139.86/x
  3. Step 3: Cross multiply
    52,013.18x = 71,778 × 28,139.86
  4. Step 4: Simplify right side
    52,013.18x = 2,019,822,871.08
  5. Step 5: Solve for x
    x = 2,019,822,871.08/52,013.18
  6. Step 6: Final answer
    x = 38,832.90

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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.