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Finding the Fourth Proportional to 70,654.36, 105,981.54 and 26,280.22

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Solution

The fourth proportional to 70,654.36, 105,981.54 and 26,280.22 is: 39,420.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,654.36 : 105,981.54 = 26,280.22 : x
  2. Step 2: Convert to fraction form
    70,654.36/105,981.54 = 26,280.22/x
  3. Step 3: Cross multiply
    70,654.36x = 105,981.54 × 26,280.22
  4. Step 4: Simplify right side
    70,654.36x = 2,785,218,187.14
  5. Step 5: Solve for x
    x = 2,785,218,187.14/70,654.36
  6. Step 6: Final answer
    x = 39,420.33

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Similar ratio
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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.