Home / 40,115.16-55,378.98-25,979.40

Finding the Fourth Proportional to 40,115.16, 55,378.98 and 25,979.40

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Solution

The fourth proportional to 40,115.16, 55,378.98 and 25,979.40 is: 35,864.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,115.16 : 55,378.98 = 25,979.40 : x
  2. Step 2: Convert to fraction form
    40,115.16/55,378.98 = 25,979.40/x
  3. Step 3: Cross multiply
    40,115.16x = 55,378.98 × 25,979.40
  4. Step 4: Simplify right side
    40,115.16x = 1,438,712,673.01
  5. Step 5: Solve for x
    x = 1,438,712,673.01/40,115.16
  6. Step 6: Final answer
    x = 35,864.56

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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.