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Finding the Fourth Proportional to 84,171.60, 126,210.42 and 41,965.74

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Solution

The fourth proportional to 84,171.60, 126,210.42 and 41,965.74 is: 62,925.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,171.60 : 126,210.42 = 41,965.74 : x
  2. Step 2: Convert to fraction form
    84,171.60/126,210.42 = 41,965.74/x
  3. Step 3: Cross multiply
    84,171.60x = 126,210.42 × 41,965.74
  4. Step 4: Simplify right side
    84,171.60x = 5,296,513,671.01
  5. Step 5: Solve for x
    x = 5,296,513,671.01/84,171.60
  6. Step 6: Final answer
    x = 62,925.19

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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.