Home / 57,566.40-86,355.36-20,621.76

Finding the Fourth Proportional to 57,566.40, 86,355.36 and 20,621.76

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Solution

The fourth proportional to 57,566.40, 86,355.36 and 20,621.76 is: 30,934.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,566.40 : 86,355.36 = 20,621.76 : x
  2. Step 2: Convert to fraction form
    57,566.40/86,355.36 = 20,621.76/x
  3. Step 3: Cross multiply
    57,566.40x = 86,355.36 × 20,621.76
  4. Step 4: Simplify right side
    57,566.40x = 1,780,799,508.63
  5. Step 5: Solve for x
    x = 1,780,799,508.63/57,566.40
  6. Step 6: Final answer
    x = 30,934.70

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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.