Home / 60,390.12-90,562.50-20,937.72

Finding the Fourth Proportional to 60,390.12, 90,562.50 and 20,937.72

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Solution

The fourth proportional to 60,390.12, 90,562.50 and 20,937.72 is: 31,398.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,390.12 : 90,562.50 = 20,937.72 : x
  2. Step 2: Convert to fraction form
    60,390.12/90,562.50 = 20,937.72/x
  3. Step 3: Cross multiply
    60,390.12x = 90,562.50 × 20,937.72
  4. Step 4: Simplify right side
    60,390.12x = 1,896,172,267.50
  5. Step 5: Solve for x
    x = 1,896,172,267.50/60,390.12
  6. Step 6: Final answer
    x = 31,398.72

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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.