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Finding the Fourth Proportional to 90,010.67, 124,214.34 and 49,724.43

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Solution

The fourth proportional to 90,010.67, 124,214.34 and 49,724.43 is: 68,619.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,010.67 : 124,214.34 = 49,724.43 : x
  2. Step 2: Convert to fraction form
    90,010.67/124,214.34 = 49,724.43/x
  3. Step 3: Cross multiply
    90,010.67x = 124,214.34 × 49,724.43
  4. Step 4: Simplify right side
    90,010.67x = 6,176,487,254.14
  5. Step 5: Solve for x
    x = 6,176,487,254.14/90,010.67
  6. Step 6: Final answer
    x = 68,619.50

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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.