Home / 81,399.47-112,295.49-49,116.08

Finding the Fourth Proportional to 81,399.47, 112,295.49 and 49,116.08

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Solution

The fourth proportional to 81,399.47, 112,295.49 and 49,116.08 is: 67,758.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,399.47 : 112,295.49 = 49,116.08 : x
  2. Step 2: Convert to fraction form
    81,399.47/112,295.49 = 49,116.08/x
  3. Step 3: Cross multiply
    81,399.47x = 112,295.49 × 49,116.08
  4. Step 4: Simplify right side
    81,399.47x = 5,515,514,261.76
  5. Step 5: Solve for x
    x = 5,515,514,261.76/81,399.47
  6. Step 6: Final answer
    x = 67,758.60

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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.