Home / 78,713.28-108,624.24-42,903.36

Finding the Fourth Proportional to 78,713.28, 108,624.24 and 42,903.36

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Solution

The fourth proportional to 78,713.28, 108,624.24 and 42,903.36 is: 59,206.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,713.28 : 108,624.24 = 42,903.36 : x
  2. Step 2: Convert to fraction form
    78,713.28/108,624.24 = 42,903.36/x
  3. Step 3: Cross multiply
    78,713.28x = 108,624.24 × 42,903.36
  4. Step 4: Simplify right side
    78,713.28x = 4,660,344,873.45
  5. Step 5: Solve for x
    x = 4,660,344,873.45/78,713.28
  6. Step 6: Final answer
    x = 59,206.59

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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.