Home / 57,130.92-78,840.18-31,637.88

Finding the Fourth Proportional to 57,130.92, 78,840.18 and 31,637.88

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Solution

The fourth proportional to 57,130.92, 78,840.18 and 31,637.88 is: 43,660.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,130.92 : 78,840.18 = 31,637.88 : x
  2. Step 2: Convert to fraction form
    57,130.92/78,840.18 = 31,637.88/x
  3. Step 3: Cross multiply
    57,130.92x = 78,840.18 × 31,637.88
  4. Step 4: Simplify right side
    57,130.92x = 2,494,336,154.02
  5. Step 5: Solve for x
    x = 2,494,336,154.02/57,130.92
  6. Step 6: Final answer
    x = 43,660.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.