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Finding the Fourth Proportional to 48,894.40, 73,487.40 and 42,479.20

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Solution

The fourth proportional to 48,894.40, 73,487.40 and 42,479.20 is: 63,845.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,894.40 : 73,487.40 = 42,479.20 : x
  2. Step 2: Convert to fraction form
    48,894.40/73,487.40 = 42,479.20/x
  3. Step 3: Cross multiply
    48,894.40x = 73,487.40 × 42,479.20
  4. Step 4: Simplify right side
    48,894.40x = 3,121,685,962.08
  5. Step 5: Solve for x
    x = 3,121,685,962.08/48,894.40
  6. Step 6: Final answer
    x = 63,845.47

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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.