Home / 77,889.28-107,487.27-42,079.29

Finding the Fourth Proportional to 77,889.28, 107,487.27 and 42,079.29

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Solution

The fourth proportional to 77,889.28, 107,487.27 and 42,079.29 is: 58,069.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,889.28 : 107,487.27 = 42,079.29 : x
  2. Step 2: Convert to fraction form
    77,889.28/107,487.27 = 42,079.29/x
  3. Step 3: Cross multiply
    77,889.28x = 107,487.27 × 42,079.29
  4. Step 4: Simplify right side
    77,889.28x = 4,522,988,005.64
  5. Step 5: Solve for x
    x = 4,522,988,005.64/77,889.28
  6. Step 6: Final answer
    x = 58,069.45

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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.