Home / 83,878.08-125,838.96-31,288

Finding the Fourth Proportional to 83,878.08, 125,838.96 and 31,288

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Solution

The fourth proportional to 83,878.08, 125,838.96 and 31,288 is: 46,940.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,878.08 : 125,838.96 = 31,288 : x
  2. Step 2: Convert to fraction form
    83,878.08/125,838.96 = 31,288/x
  3. Step 3: Cross multiply
    83,878.08x = 125,838.96 × 31,288
  4. Step 4: Simplify right side
    83,878.08x = 3,937,249,380.48
  5. Step 5: Solve for x
    x = 3,937,249,380.48/83,878.08
  6. Step 6: Final answer
    x = 46,940.15

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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.