Home / 83,916.15-125,875.91-31,315.14

Finding the Fourth Proportional to 83,916.15, 125,875.91 and 31,315.14

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Solution

The fourth proportional to 83,916.15, 125,875.91 and 31,315.14 is: 46,973.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,916.15 : 125,875.91 = 31,315.14 : x
  2. Step 2: Convert to fraction form
    83,916.15/125,875.91 = 31,315.14/x
  3. Step 3: Cross multiply
    83,916.15x = 125,875.91 × 31,315.14
  4. Step 4: Simplify right side
    83,916.15x = 3,941,821,587.70
  5. Step 5: Solve for x
    x = 3,941,821,587.70/83,916.15
  6. Step 6: Final answer
    x = 46,973.34

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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.