Home / 81,947.19-113,087.08-47,962.15

Finding the Fourth Proportional to 81,947.19, 113,087.08 and 47,962.15

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Solution

The fourth proportional to 81,947.19, 113,087.08 and 47,962.15 is: 66,187.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,947.19 : 113,087.08 = 47,962.15 : x
  2. Step 2: Convert to fraction form
    81,947.19/113,087.08 = 47,962.15/x
  3. Step 3: Cross multiply
    81,947.19x = 113,087.08 × 47,962.15
  4. Step 4: Simplify right side
    81,947.19x = 5,423,899,091.40
  5. Step 5: Solve for x
    x = 5,423,899,091.40/81,947.19
  6. Step 6: Final answer
    x = 66,187.74

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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.