Home / 99,311.49-137,049.55-53,989.42

Finding the Fourth Proportional to 99,311.49, 137,049.55 and 53,989.42

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Solution

The fourth proportional to 99,311.49, 137,049.55 and 53,989.42 is: 74,505.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,311.49 : 137,049.55 = 53,989.42 : x
  2. Step 2: Convert to fraction form
    99,311.49/137,049.55 = 53,989.42/x
  3. Step 3: Cross multiply
    99,311.49x = 137,049.55 × 53,989.42
  4. Step 4: Simplify right side
    99,311.49x = 7,399,225,715.76
  5. Step 5: Solve for x
    x = 7,399,225,715.76/99,311.49
  6. Step 6: Final answer
    x = 74,505.23

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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.