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Finding the Fourth Proportional to 71,620.09, 106,904.41 and 66,342.13

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Solution

The fourth proportional to 71,620.09, 106,904.41 and 66,342.13 is: 99,026.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,620.09 : 106,904.41 = 66,342.13 : x
  2. Step 2: Convert to fraction form
    71,620.09/106,904.41 = 66,342.13/x
  3. Step 3: Cross multiply
    71,620.09x = 106,904.41 × 66,342.13
  4. Step 4: Simplify right side
    71,620.09x = 7,092,266,265.79
  5. Step 5: Solve for x
    x = 7,092,266,265.79/71,620.09
  6. Step 6: Final answer
    x = 99,026.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.