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Finding the Fourth Proportional to 90,340.68, 124,674.78 and 54,530.20

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Solution

The fourth proportional to 90,340.68, 124,674.78 and 54,530.20 is: 75,254.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,340.68 : 124,674.78 = 54,530.20 : x
  2. Step 2: Convert to fraction form
    90,340.68/124,674.78 = 54,530.20/x
  3. Step 3: Cross multiply
    90,340.68x = 124,674.78 × 54,530.20
  4. Step 4: Simplify right side
    90,340.68x = 6,798,540,688.36
  5. Step 5: Solve for x
    x = 6,798,540,688.36/90,340.68
  6. Step 6: Final answer
    x = 75,254.48

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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.