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Finding the Fourth Proportional to 64,290.07, 88,721.63 and 38,475.30

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Solution

The fourth proportional to 64,290.07, 88,721.63 and 38,475.30 is: 53,096.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,290.07 : 88,721.63 = 38,475.30 : x
  2. Step 2: Convert to fraction form
    64,290.07/88,721.63 = 38,475.30/x
  3. Step 3: Cross multiply
    64,290.07x = 88,721.63 × 38,475.30
  4. Step 4: Simplify right side
    64,290.07x = 3,413,591,519.97
  5. Step 5: Solve for x
    x = 3,413,591,519.97/64,290.07
  6. Step 6: Final answer
    x = 53,096.72

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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.