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Finding the Fourth Proportional to 60,105.97, 90,079.32 and 31,965.45

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Solution

The fourth proportional to 60,105.97, 90,079.32 and 31,965.45 is: 47,905.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,105.97 : 90,079.32 = 31,965.45 : x
  2. Step 2: Convert to fraction form
    60,105.97/90,079.32 = 31,965.45/x
  3. Step 3: Cross multiply
    60,105.97x = 90,079.32 × 31,965.45
  4. Step 4: Simplify right side
    60,105.97x = 2,879,425,999.49
  5. Step 5: Solve for x
    x = 2,879,425,999.49/60,105.97
  6. Step 6: Final answer
    x = 47,905.82

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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.