Home / 88,428.57-121,995.30-54,426.81

Finding the Fourth Proportional to 88,428.57, 121,995.30 and 54,426.81

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Solution

The fourth proportional to 88,428.57, 121,995.30 and 54,426.81 is: 75,086.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,428.57 : 121,995.30 = 54,426.81 : x
  2. Step 2: Convert to fraction form
    88,428.57/121,995.30 = 54,426.81/x
  3. Step 3: Cross multiply
    88,428.57x = 121,995.30 × 54,426.81
  4. Step 4: Simplify right side
    88,428.57x = 6,639,815,013.99
  5. Step 5: Solve for x
    x = 6,639,815,013.99/88,428.57
  6. Step 6: Final answer
    x = 75,086.76

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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.