Home / 81,082.50-121,541.67-38,900.58

Finding the Fourth Proportional to 81,082.50, 121,541.67 and 38,900.58

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Solution

The fourth proportional to 81,082.50, 121,541.67 and 38,900.58 is: 58,311.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,082.50 : 121,541.67 = 38,900.58 : x
  2. Step 2: Convert to fraction form
    81,082.50/121,541.67 = 38,900.58/x
  3. Step 3: Cross multiply
    81,082.50x = 121,541.67 × 38,900.58
  4. Step 4: Simplify right side
    81,082.50x = 4,728,041,457.17
  5. Step 5: Solve for x
    x = 4,728,041,457.17/81,082.50
  6. Step 6: Final answer
    x = 58,311.49

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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.