Home / 87,831.66-131,666.76-31,658.02

Finding the Fourth Proportional to 87,831.66, 131,666.76 and 31,658.02

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Solution

The fourth proportional to 87,831.66, 131,666.76 and 31,658.02 is: 47,457.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,831.66 : 131,666.76 = 31,658.02 : x
  2. Step 2: Convert to fraction form
    87,831.66/131,666.76 = 31,658.02/x
  3. Step 3: Cross multiply
    87,831.66x = 131,666.76 × 31,658.02
  4. Step 4: Simplify right side
    87,831.66x = 4,168,308,921.42
  5. Step 5: Solve for x
    x = 4,168,308,921.42/87,831.66
  6. Step 6: Final answer
    x = 47,457.93

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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.