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Finding the Fourth Proportional to 89,760.96, 134,666.40 and 39,164.40

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Solution

The fourth proportional to 89,760.96, 134,666.40 and 39,164.40 is: 58,757.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,760.96 : 134,666.40 = 39,164.40 : x
  2. Step 2: Convert to fraction form
    89,760.96/134,666.40 = 39,164.40/x
  3. Step 3: Cross multiply
    89,760.96x = 134,666.40 × 39,164.40
  4. Step 4: Simplify right side
    89,760.96x = 5,274,128,756.16
  5. Step 5: Solve for x
    x = 5,274,128,756.16/89,760.96
  6. Step 6: Final answer
    x = 58,757.49

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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.