Home / 81,331.63-112,212.07-45,515.95

Finding the Fourth Proportional to 81,331.63, 112,212.07 and 45,515.95

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Solution

The fourth proportional to 81,331.63, 112,212.07 and 45,515.95 is: 62,797.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,331.63 : 112,212.07 = 45,515.95 : x
  2. Step 2: Convert to fraction form
    81,331.63/112,212.07 = 45,515.95/x
  3. Step 3: Cross multiply
    81,331.63x = 112,212.07 × 45,515.95
  4. Step 4: Simplify right side
    81,331.63x = 5,107,438,967.52
  5. Step 5: Solve for x
    x = 5,107,438,967.52/81,331.63
  6. Step 6: Final answer
    x = 62,797.70

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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.