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Finding the Fourth Proportional to 101,480.76, 140,040 and 56,160.66

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Solution

The fourth proportional to 101,480.76, 140,040 and 56,160.66 is: 77,499.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,480.76 : 140,040 = 56,160.66 : x
  2. Step 2: Convert to fraction form
    101,480.76/140,040 = 56,160.66/x
  3. Step 3: Cross multiply
    101,480.76x = 140,040 × 56,160.66
  4. Step 4: Simplify right side
    101,480.76x = 7,864,738,826.40
  5. Step 5: Solve for x
    x = 7,864,738,826.40/101,480.76
  6. Step 6: Final answer
    x = 77,499.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.