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Finding the Fourth Proportional to 62,143.20, 85,723.92 and 36,987.84

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Solution

The fourth proportional to 62,143.20, 85,723.92 and 36,987.84 is: 51,023.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,143.20 : 85,723.92 = 36,987.84 : x
  2. Step 2: Convert to fraction form
    62,143.20/85,723.92 = 36,987.84/x
  3. Step 3: Cross multiply
    62,143.20x = 85,723.92 × 36,987.84
  4. Step 4: Simplify right side
    62,143.20x = 3,170,742,637.13
  5. Step 5: Solve for x
    x = 3,170,742,637.13/62,143.20
  6. Step 6: Final answer
    x = 51,023.16

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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.