Home / 83,913.40-125,871.78-31,312.39

Finding the Fourth Proportional to 83,913.40, 125,871.78 and 31,312.39

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Solution

The fourth proportional to 83,913.40, 125,871.78 and 31,312.39 is: 46,969.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,913.40 : 125,871.78 = 31,312.39 : x
  2. Step 2: Convert to fraction form
    83,913.40/125,871.78 = 31,312.39/x
  3. Step 3: Cross multiply
    83,913.40x = 125,871.78 × 31,312.39
  4. Step 4: Simplify right side
    83,913.40x = 3,941,346,265.35
  5. Step 5: Solve for x
    x = 3,941,346,265.35/83,913.40
  6. Step 6: Final answer
    x = 46,969.21

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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.