Home / 83,921.90-125,884.54-31,320.90

Finding the Fourth Proportional to 83,921.90, 125,884.54 and 31,320.90

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Solution

The fourth proportional to 83,921.90, 125,884.54 and 31,320.90 is: 46,981.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,921.90 : 125,884.54 = 31,320.90 : x
  2. Step 2: Convert to fraction form
    83,921.90/125,884.54 = 31,320.90/x
  3. Step 3: Cross multiply
    83,921.90x = 125,884.54 × 31,320.90
  4. Step 4: Simplify right side
    83,921.90x = 3,942,817,088.89
  5. Step 5: Solve for x
    x = 3,942,817,088.89/83,921.90
  6. Step 6: Final answer
    x = 46,981.98

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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.