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Finding the Fourth Proportional to 90,349.64, 124,744.74 and 69,091.88

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Solution

The fourth proportional to 90,349.64, 124,744.74 and 69,091.88 is: 95,394.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,349.64 : 124,744.74 = 69,091.88 : x
  2. Step 2: Convert to fraction form
    90,349.64/124,744.74 = 69,091.88/x
  3. Step 3: Cross multiply
    90,349.64x = 124,744.74 × 69,091.88
  4. Step 4: Simplify right side
    90,349.64x = 8,618,848,606.71
  5. Step 5: Solve for x
    x = 8,618,848,606.71/90,349.64
  6. Step 6: Final answer
    x = 95,394.39

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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.