Home / 78,155.28-107,740.94-51,251.13

Finding the Fourth Proportional to 78,155.28, 107,740.94 and 51,251.13

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Solution

The fourth proportional to 78,155.28, 107,740.94 and 51,251.13 is: 70,652.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,155.28 : 107,740.94 = 51,251.13 : x
  2. Step 2: Convert to fraction form
    78,155.28/107,740.94 = 51,251.13/x
  3. Step 3: Cross multiply
    78,155.28x = 107,740.94 × 51,251.13
  4. Step 4: Simplify right side
    78,155.28x = 5,521,844,666.01
  5. Step 5: Solve for x
    x = 5,521,844,666.01/78,155.28
  6. Step 6: Final answer
    x = 70,652.23

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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.