Home / 57,534.20-86,390.40-31,290.20

Finding the Fourth Proportional to 57,534.20, 86,390.40 and 31,290.20

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Solution

The fourth proportional to 57,534.20, 86,390.40 and 31,290.20 is: 46,983.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,534.20 : 86,390.40 = 31,290.20 : x
  2. Step 2: Convert to fraction form
    57,534.20/86,390.40 = 31,290.20/x
  3. Step 3: Cross multiply
    57,534.20x = 86,390.40 × 31,290.20
  4. Step 4: Simplify right side
    57,534.20x = 2,703,172,894.08
  5. Step 5: Solve for x
    x = 2,703,172,894.08/57,534.20
  6. Step 6: Final answer
    x = 46,983.76

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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.