Home / 74,520.82-102,839.16-40,529.71

Finding the Fourth Proportional to 74,520.82, 102,839.16 and 40,529.71

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Solution

The fourth proportional to 74,520.82, 102,839.16 and 40,529.71 is: 55,931.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,520.82 : 102,839.16 = 40,529.71 : x
  2. Step 2: Convert to fraction form
    74,520.82/102,839.16 = 40,529.71/x
  3. Step 3: Cross multiply
    74,520.82x = 102,839.16 × 40,529.71
  4. Step 4: Simplify right side
    74,520.82x = 4,168,041,331.44
  5. Step 5: Solve for x
    x = 4,168,041,331.44/74,520.82
  6. Step 6: Final answer
    x = 55,931.23

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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.