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Finding the Fourth Proportional to 89,551.80, 134,424.90 and 69,917.40

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Solution

The fourth proportional to 89,551.80, 134,424.90 and 69,917.40 is: 104,951.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,551.80 : 134,424.90 = 69,917.40 : x
  2. Step 2: Convert to fraction form
    89,551.80/134,424.90 = 69,917.40/x
  3. Step 3: Cross multiply
    89,551.80x = 134,424.90 × 69,917.40
  4. Step 4: Simplify right side
    89,551.80x = 9,398,639,503.26
  5. Step 5: Solve for x
    x = 9,398,639,503.26/89,551.80
  6. Step 6: Final answer
    x = 104,951.99

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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.