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Finding the Fourth Proportional to 63,672, 87,875.46 and 38,521.68

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Solution

The fourth proportional to 63,672, 87,875.46 and 38,521.68 is: 53,164.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,672 : 87,875.46 = 38,521.68 : x
  2. Step 2: Convert to fraction form
    63,672/87,875.46 = 38,521.68/x
  3. Step 3: Cross multiply
    63,672x = 87,875.46 × 38,521.68
  4. Step 4: Simplify right side
    63,672x = 3,385,110,349.97
  5. Step 5: Solve for x
    x = 3,385,110,349.97/63,672
  6. Step 6: Final answer
    x = 53,164.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.