Home / 74,931.30-112,440.15-28,217.70

Finding the Fourth Proportional to 74,931.30, 112,440.15 and 28,217.70

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Solution

The fourth proportional to 74,931.30, 112,440.15 and 28,217.70 is: 42,342.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,931.30 : 112,440.15 = 28,217.70 : x
  2. Step 2: Convert to fraction form
    74,931.30/112,440.15 = 28,217.70/x
  3. Step 3: Cross multiply
    74,931.30x = 112,440.15 × 28,217.70
  4. Step 4: Simplify right side
    74,931.30x = 3,172,802,420.66
  5. Step 5: Solve for x
    x = 3,172,802,420.66/74,931.30
  6. Step 6: Final answer
    x = 42,342.82

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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.