Home / 83,970.15-125,988.05-31,367.35

Finding the Fourth Proportional to 83,970.15, 125,988.05 and 31,367.35

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Solution

The fourth proportional to 83,970.15, 125,988.05 and 31,367.35 is: 47,063.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,970.15 : 125,988.05 = 31,367.35 : x
  2. Step 2: Convert to fraction form
    83,970.15/125,988.05 = 31,367.35/x
  3. Step 3: Cross multiply
    83,970.15x = 125,988.05 × 31,367.35
  4. Step 4: Simplify right side
    83,970.15x = 3,951,911,260.17
  5. Step 5: Solve for x
    x = 3,951,911,260.17/83,970.15
  6. Step 6: Final answer
    x = 47,063.29

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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.