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Finding the Fourth Proportional to 60,087.88, 90,136.68 and 20,645.02

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Solution

The fourth proportional to 60,087.88, 90,136.68 and 20,645.02 is: 30,969.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,087.88 : 90,136.68 = 20,645.02 : x
  2. Step 2: Convert to fraction form
    60,087.88/90,136.68 = 20,645.02/x
  3. Step 3: Cross multiply
    60,087.88x = 90,136.68 × 20,645.02
  4. Step 4: Simplify right side
    60,087.88x = 1,860,873,561.33
  5. Step 5: Solve for x
    x = 1,860,873,561.33/60,087.88
  6. Step 6: Final answer
    x = 30,969.20

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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.