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Finding the Fourth Proportional to 89,841.40, 134,737.80 and 26,661.40

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Solution

The fourth proportional to 89,841.40, 134,737.80 and 26,661.40 is: 39,984.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,841.40 : 134,737.80 = 26,661.40 : x
  2. Step 2: Convert to fraction form
    89,841.40/134,737.80 = 26,661.40/x
  3. Step 3: Cross multiply
    89,841.40x = 134,737.80 × 26,661.40
  4. Step 4: Simplify right side
    89,841.40x = 3,592,298,380.92
  5. Step 5: Solve for x
    x = 3,592,298,380.92/89,841.40
  6. Step 6: Final answer
    x = 39,984.89

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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.