Home / 57,707.20-86,585.10-31,430.80

Finding the Fourth Proportional to 57,707.20, 86,585.10 and 31,430.80

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Solution

The fourth proportional to 57,707.20, 86,585.10 and 31,430.80 is: 47,159.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,707.20 : 86,585.10 = 31,430.80 : x
  2. Step 2: Convert to fraction form
    57,707.20/86,585.10 = 31,430.80/x
  3. Step 3: Cross multiply
    57,707.20x = 86,585.10 × 31,430.80
  4. Step 4: Simplify right side
    57,707.20x = 2,721,438,961.08
  5. Step 5: Solve for x
    x = 2,721,438,961.08/57,707.20
  6. Step 6: Final answer
    x = 47,159.44

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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.