Home / 86,711.60-130,141.47-61,812.56

Finding the Fourth Proportional to 86,711.60, 130,141.47 and 61,812.56

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Solution

The fourth proportional to 86,711.60, 130,141.47 and 61,812.56 is: 92,771.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,711.60 : 130,141.47 = 61,812.56 : x
  2. Step 2: Convert to fraction form
    86,711.60/130,141.47 = 61,812.56/x
  3. Step 3: Cross multiply
    86,711.60x = 130,141.47 × 61,812.56
  4. Step 4: Simplify right side
    86,711.60x = 8,044,377,422.86
  5. Step 5: Solve for x
    x = 8,044,377,422.86/86,711.60
  6. Step 6: Final answer
    x = 92,771.64

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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.