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Finding the Fourth Proportional to 90,260.56, 124,560.89 and 51,999

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Solution

The fourth proportional to 90,260.56, 124,560.89 and 51,999 is: 71,759.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,260.56 : 124,560.89 = 51,999 : x
  2. Step 2: Convert to fraction form
    90,260.56/124,560.89 = 51,999/x
  3. Step 3: Cross multiply
    90,260.56x = 124,560.89 × 51,999
  4. Step 4: Simplify right side
    90,260.56x = 6,477,041,719.11
  5. Step 5: Solve for x
    x = 6,477,041,719.11/90,260.56
  6. Step 6: Final answer
    x = 71,759.38

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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.