Home / 90,648.16-135,925.51-40,685.43

Finding the Fourth Proportional to 90,648.16, 135,925.51 and 40,685.43

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Solution

The fourth proportional to 90,648.16, 135,925.51 and 40,685.43 is: 61,007.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,648.16 : 135,925.51 = 40,685.43 : x
  2. Step 2: Convert to fraction form
    90,648.16/135,925.51 = 40,685.43/x
  3. Step 3: Cross multiply
    90,648.16x = 135,925.51 × 40,685.43
  4. Step 4: Simplify right side
    90,648.16x = 5,530,187,040.98
  5. Step 5: Solve for x
    x = 5,530,187,040.98/90,648.16
  6. Step 6: Final answer
    x = 61,007.16

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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.