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Finding the Fourth Proportional to 58,230.52, 87,340.90 and 20,818.24

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Solution

The fourth proportional to 58,230.52, 87,340.90 and 20,818.24 is: 31,225.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,230.52 : 87,340.90 = 20,818.24 : x
  2. Step 2: Convert to fraction form
    58,230.52/87,340.90 = 20,818.24/x
  3. Step 3: Cross multiply
    58,230.52x = 87,340.90 × 20,818.24
  4. Step 4: Simplify right side
    58,230.52x = 1,818,283,818.02
  5. Step 5: Solve for x
    x = 1,818,283,818.02/58,230.52
  6. Step 6: Final answer
    x = 31,225.62

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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.