Home / 71,981.42-99,334.53-40,152.38

Finding the Fourth Proportional to 71,981.42, 99,334.53 and 40,152.38

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Solution

The fourth proportional to 71,981.42, 99,334.53 and 40,152.38 is: 55,410.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,981.42 : 99,334.53 = 40,152.38 : x
  2. Step 2: Convert to fraction form
    71,981.42/99,334.53 = 40,152.38/x
  3. Step 3: Cross multiply
    71,981.42x = 99,334.53 × 40,152.38
  4. Step 4: Simplify right side
    71,981.42x = 3,988,517,299.01
  5. Step 5: Solve for x
    x = 3,988,517,299.01/71,981.42
  6. Step 6: Final answer
    x = 55,410.38

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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.