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Finding the Fourth Proportional to 90,507.98, 124,895.01 and 50,219.19

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Solution

The fourth proportional to 90,507.98, 124,895.01 and 50,219.19 is: 69,299.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,507.98 : 124,895.01 = 50,219.19 : x
  2. Step 2: Convert to fraction form
    90,507.98/124,895.01 = 50,219.19/x
  3. Step 3: Cross multiply
    90,507.98x = 124,895.01 × 50,219.19
  4. Step 4: Simplify right side
    90,507.98x = 6,272,126,425.56
  5. Step 5: Solve for x
    x = 6,272,126,425.56/90,507.98
  6. Step 6: Final answer
    x = 69,299.15

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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.