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Finding the Fourth Proportional to 90,363.51, 124,660.74 and 54,542.07

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Solution

The fourth proportional to 90,363.51, 124,660.74 and 54,542.07 is: 75,243.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,363.51 : 124,660.74 = 54,542.07 : x
  2. Step 2: Convert to fraction form
    90,363.51/124,660.74 = 54,542.07/x
  3. Step 3: Cross multiply
    90,363.51x = 124,660.74 × 54,542.07
  4. Step 4: Simplify right side
    90,363.51x = 6,799,254,807.33
  5. Step 5: Solve for x
    x = 6,799,254,807.33/90,363.51
  6. Step 6: Final answer
    x = 75,243.37

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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.