Home / 81,301.68-112,182.84-47,774.16

Finding the Fourth Proportional to 81,301.68, 112,182.84 and 47,774.16

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Solution

The fourth proportional to 81,301.68, 112,182.84 and 47,774.16 is: 65,920.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,301.68 : 112,182.84 = 47,774.16 : x
  2. Step 2: Convert to fraction form
    81,301.68/112,182.84 = 47,774.16/x
  3. Step 3: Cross multiply
    81,301.68x = 112,182.84 × 47,774.16
  4. Step 4: Simplify right side
    81,301.68x = 5,359,440,947.41
  5. Step 5: Solve for x
    x = 5,359,440,947.41/81,301.68
  6. Step 6: Final answer
    x = 65,920.42

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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.