Home / 65,531.16-90,407.34-40,336.92

Finding the Fourth Proportional to 65,531.16, 90,407.34 and 40,336.92

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Solution

The fourth proportional to 65,531.16, 90,407.34 and 40,336.92 is: 55,649.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,531.16 : 90,407.34 = 40,336.92 : x
  2. Step 2: Convert to fraction form
    65,531.16/90,407.34 = 40,336.92/x
  3. Step 3: Cross multiply
    65,531.16x = 90,407.34 × 40,336.92
  4. Step 4: Simplify right side
    65,531.16x = 3,646,753,640.99
  5. Step 5: Solve for x
    x = 3,646,753,640.99/65,531.16
  6. Step 6: Final answer
    x = 55,649.15

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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.