Home / 83,438.78-115,117.19-47,134.92

Finding the Fourth Proportional to 83,438.78, 115,117.19 and 47,134.92

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Solution

The fourth proportional to 83,438.78, 115,117.19 and 47,134.92 is: 65,030.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,438.78 : 115,117.19 = 47,134.92 : x
  2. Step 2: Convert to fraction form
    83,438.78/115,117.19 = 47,134.92/x
  3. Step 3: Cross multiply
    83,438.78x = 115,117.19 × 47,134.92
  4. Step 4: Simplify right side
    83,438.78x = 5,426,039,281.17
  5. Step 5: Solve for x
    x = 5,426,039,281.17/83,438.78
  6. Step 6: Final answer
    x = 65,030.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.