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Finding the Fourth Proportional to 57,437.60, 86,168.52 and 28,990.76

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Solution

The fourth proportional to 57,437.60, 86,168.52 and 28,990.76 is: 43,492.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,437.60 : 86,168.52 = 28,990.76 : x
  2. Step 2: Convert to fraction form
    57,437.60/86,168.52 = 28,990.76/x
  3. Step 3: Cross multiply
    57,437.60x = 86,168.52 × 28,990.76
  4. Step 4: Simplify right side
    57,437.60x = 2,498,090,882.88
  5. Step 5: Solve for x
    x = 2,498,090,882.88/57,437.60
  6. Step 6: Final answer
    x = 43,492.26

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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.