Home / 57,154.19-78,870.03-31,658.83

Finding the Fourth Proportional to 57,154.19, 78,870.03 and 31,658.83

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Solution

The fourth proportional to 57,154.19, 78,870.03 and 31,658.83 is: 43,687.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,154.19 : 78,870.03 = 31,658.83 : x
  2. Step 2: Convert to fraction form
    57,154.19/78,870.03 = 31,658.83/x
  3. Step 3: Cross multiply
    57,154.19x = 78,870.03 × 31,658.83
  4. Step 4: Simplify right side
    57,154.19x = 2,496,932,871.86
  5. Step 5: Solve for x
    x = 2,496,932,871.86/57,154.19
  6. Step 6: Final answer
    x = 43,687.66

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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.