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Finding the Fourth Proportional to 60,534.88, 90,810.78 and 21,086.20

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Solution

The fourth proportional to 60,534.88, 90,810.78 and 21,086.20 is: 31,632.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,534.88 : 90,810.78 = 21,086.20 : x
  2. Step 2: Convert to fraction form
    60,534.88/90,810.78 = 21,086.20/x
  3. Step 3: Cross multiply
    60,534.88x = 90,810.78 × 21,086.20
  4. Step 4: Simplify right side
    60,534.88x = 1,914,854,269.24
  5. Step 5: Solve for x
    x = 1,914,854,269.24/60,534.88
  6. Step 6: Final answer
    x = 31,632.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.