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Finding the Fourth Proportional to 90,478.48, 124,859.80 and 50,191.84

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Solution

The fourth proportional to 90,478.48, 124,859.80 and 50,191.84 is: 69,264.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,478.48 : 124,859.80 = 50,191.84 : x
  2. Step 2: Convert to fraction form
    90,478.48/124,859.80 = 50,191.84/x
  3. Step 3: Cross multiply
    90,478.48x = 124,859.80 × 50,191.84
  4. Step 4: Simplify right side
    90,478.48x = 6,266,943,104.03
  5. Step 5: Solve for x
    x = 6,266,943,104.03/90,478.48
  6. Step 6: Final answer
    x = 69,264.46

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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.