Home / 77,987.28-116,996.70-25,382.64

Finding the Fourth Proportional to 77,987.28, 116,996.70 and 25,382.64

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Solution

The fourth proportional to 77,987.28, 116,996.70 and 25,382.64 is: 38,079.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,987.28 : 116,996.70 = 25,382.64 : x
  2. Step 2: Convert to fraction form
    77,987.28/116,996.70 = 25,382.64/x
  3. Step 3: Cross multiply
    77,987.28x = 116,996.70 × 25,382.64
  4. Step 4: Simplify right side
    77,987.28x = 2,969,685,117.29
  5. Step 5: Solve for x
    x = 2,969,685,117.29/77,987.28
  6. Step 6: Final answer
    x = 38,079.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.