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Finding the Fourth Proportional to 48,337.40, 72,678.90 and 40,734.20

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Solution

The fourth proportional to 48,337.40, 72,678.90 and 40,734.20 is: 61,246.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,337.40 : 72,678.90 = 40,734.20 : x
  2. Step 2: Convert to fraction form
    48,337.40/72,678.90 = 40,734.20/x
  3. Step 3: Cross multiply
    48,337.40x = 72,678.90 × 40,734.20
  4. Step 4: Simplify right side
    48,337.40x = 2,960,516,848.38
  5. Step 5: Solve for x
    x = 2,960,516,848.38/48,337.40
  6. Step 6: Final answer
    x = 61,246.92

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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.