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Finding the Fourth Proportional to 60,108.47, 90,174.99 and 20,660.45

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Solution

The fourth proportional to 60,108.47, 90,174.99 and 20,660.45 is: 30,994.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,108.47 : 90,174.99 = 20,660.45 : x
  2. Step 2: Convert to fraction form
    60,108.47/90,174.99 = 20,660.45/x
  3. Step 3: Cross multiply
    60,108.47x = 90,174.99 × 20,660.45
  4. Step 4: Simplify right side
    60,108.47x = 1,863,055,421.27
  5. Step 5: Solve for x
    x = 1,863,055,421.27/60,108.47
  6. Step 6: Final answer
    x = 30,994.89

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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.