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Finding the Fourth Proportional to 89,721.80, 134,534.10 and 37,071.80

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Solution

The fourth proportional to 89,721.80, 134,534.10 and 37,071.80 is: 55,587.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,721.80 : 134,534.10 = 37,071.80 : x
  2. Step 2: Convert to fraction form
    89,721.80/134,534.10 = 37,071.80/x
  3. Step 3: Cross multiply
    89,721.80x = 134,534.10 × 37,071.80
  4. Step 4: Simplify right side
    89,721.80x = 4,987,421,248.38
  5. Step 5: Solve for x
    x = 4,987,421,248.38/89,721.80
  6. Step 6: Final answer
    x = 55,587.62

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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.