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Finding the Fourth Proportional to 40,570.59, 60,856.02 and 12,490.47

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Solution

The fourth proportional to 40,570.59, 60,856.02 and 12,490.47 is: 18,735.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,570.59 : 60,856.02 = 12,490.47 : x
  2. Step 2: Convert to fraction form
    40,570.59/60,856.02 = 12,490.47/x
  3. Step 3: Cross multiply
    40,570.59x = 60,856.02 × 12,490.47
  4. Step 4: Simplify right side
    40,570.59x = 760,120,292.13
  5. Step 5: Solve for x
    x = 760,120,292.13/40,570.59
  6. Step 6: Final answer
    x = 18,735.75

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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.