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Finding the Fourth Proportional to 71,158.48, 106,737.59 and 66,828.22

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Solution

The fourth proportional to 71,158.48, 106,737.59 and 66,828.22 is: 100,242.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,158.48 : 106,737.59 = 66,828.22 : x
  2. Step 2: Convert to fraction form
    71,158.48/106,737.59 = 66,828.22/x
  3. Step 3: Cross multiply
    71,158.48x = 106,737.59 × 66,828.22
  4. Step 4: Simplify right side
    71,158.48x = 7,133,082,812.65
  5. Step 5: Solve for x
    x = 7,133,082,812.65/71,158.48
  6. Step 6: Final answer
    x = 100,242.20

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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.