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Finding the Fourth Proportional to 48,838.40, 73,403.40 and 42,423.20

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Solution

The fourth proportional to 48,838.40, 73,403.40 and 42,423.20 is: 63,761.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,838.40 : 73,403.40 = 42,423.20 : x
  2. Step 2: Convert to fraction form
    48,838.40/73,403.40 = 42,423.20/x
  3. Step 3: Cross multiply
    48,838.40x = 73,403.40 × 42,423.20
  4. Step 4: Simplify right side
    48,838.40x = 3,114,007,118.88
  5. Step 5: Solve for x
    x = 3,114,007,118.88/48,838.40
  6. Step 6: Final answer
    x = 63,761.45

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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.