Home / 78,574.28-108,431.38-43,246.28

Finding the Fourth Proportional to 78,574.28, 108,431.38 and 43,246.28

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Solution

The fourth proportional to 78,574.28, 108,431.38 and 43,246.28 is: 59,679.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,574.28 : 108,431.38 = 43,246.28 : x
  2. Step 2: Convert to fraction form
    78,574.28/108,431.38 = 43,246.28/x
  3. Step 3: Cross multiply
    78,574.28x = 108,431.38 × 43,246.28
  4. Step 4: Simplify right side
    78,574.28x = 4,689,253,820.27
  5. Step 5: Solve for x
    x = 4,689,253,820.27/78,574.28
  6. Step 6: Final answer
    x = 59,679.25

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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.