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Finding the Fourth Proportional to 60,345.60, 90,615.60 and 40,711.20

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Solution

The fourth proportional to 60,345.60, 90,615.60 and 40,711.20 is: 61,132.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,345.60 : 90,615.60 = 40,711.20 : x
  2. Step 2: Convert to fraction form
    60,345.60/90,615.60 = 40,711.20/x
  3. Step 3: Cross multiply
    60,345.60x = 90,615.60 × 40,711.20
  4. Step 4: Simplify right side
    60,345.60x = 3,689,069,814.72
  5. Step 5: Solve for x
    x = 3,689,069,814.72/60,345.60
  6. Step 6: Final answer
    x = 61,132.37

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1.5x scale

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.