Home / 40,685.40-56,139.36-22,781.16

Finding the Fourth Proportional to 40,685.40, 56,139.36 and 22,781.16

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Solution

The fourth proportional to 40,685.40, 56,139.36 and 22,781.16 is: 31,434.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,685.40 : 56,139.36 = 22,781.16 : x
  2. Step 2: Convert to fraction form
    40,685.40/56,139.36 = 22,781.16/x
  3. Step 3: Cross multiply
    40,685.40x = 56,139.36 × 22,781.16
  4. Step 4: Simplify right side
    40,685.40x = 1,278,919,742.46
  5. Step 5: Solve for x
    x = 1,278,919,742.46/40,685.40
  6. Step 6: Final answer
    x = 31,434.37

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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.