Home / 86,895.78-119,916.12-47,151.78

Finding the Fourth Proportional to 86,895.78, 119,916.12 and 47,151.78

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Solution

The fourth proportional to 86,895.78, 119,916.12 and 47,151.78 is: 65,069.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,895.78 : 119,916.12 = 47,151.78 : x
  2. Step 2: Convert to fraction form
    86,895.78/119,916.12 = 47,151.78/x
  3. Step 3: Cross multiply
    86,895.78x = 119,916.12 × 47,151.78
  4. Step 4: Simplify right side
    86,895.78x = 5,654,258,508.69
  5. Step 5: Solve for x
    x = 5,654,258,508.69/86,895.78
  6. Step 6: Final answer
    x = 65,069.43

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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.