Home / 78,601.10-117,950.25-31,854.38

Finding the Fourth Proportional to 78,601.10, 117,950.25 and 31,854.38

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Solution

The fourth proportional to 78,601.10, 117,950.25 and 31,854.38 is: 47,801.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,601.10 : 117,950.25 = 31,854.38 : x
  2. Step 2: Convert to fraction form
    78,601.10/117,950.25 = 31,854.38/x
  3. Step 3: Cross multiply
    78,601.10x = 117,950.25 × 31,854.38
  4. Step 4: Simplify right side
    78,601.10x = 3,757,232,084.60
  5. Step 5: Solve for x
    x = 3,757,232,084.60/78,601.10
  6. Step 6: Final answer
    x = 47,801.27

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1.5x scale

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.