Home / 70,819.20-97,732.08-38,988.72

Finding the Fourth Proportional to 70,819.20, 97,732.08 and 38,988.72

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Solution

The fourth proportional to 70,819.20, 97,732.08 and 38,988.72 is: 53,805.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,819.20 : 97,732.08 = 38,988.72 : x
  2. Step 2: Convert to fraction form
    70,819.20/97,732.08 = 38,988.72/x
  3. Step 3: Cross multiply
    70,819.20x = 97,732.08 × 38,988.72
  4. Step 4: Simplify right side
    70,819.20x = 3,810,448,702.14
  5. Step 5: Solve for x
    x = 3,810,448,702.14/70,819.20
  6. Step 6: Final answer
    x = 53,805.31

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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.