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Finding the Fourth Proportional to 90,850.70, 125,320.82 and 59,040.78

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Solution

The fourth proportional to 90,850.70, 125,320.82 and 59,040.78 is: 81,441.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,850.70 : 125,320.82 = 59,040.78 : x
  2. Step 2: Convert to fraction form
    90,850.70/125,320.82 = 59,040.78/x
  3. Step 3: Cross multiply
    90,850.70x = 125,320.82 × 59,040.78
  4. Step 4: Simplify right side
    90,850.70x = 7,399,038,667.84
  5. Step 5: Solve for x
    x = 7,399,038,667.84/90,850.70
  6. Step 6: Final answer
    x = 81,441.74

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1.5x scale

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.