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Finding the Fourth Proportional to 60,110.88, 90,130.32 and 28,528.80

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Solution

The fourth proportional to 60,110.88, 90,130.32 and 28,528.80 is: 42,776.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,110.88 : 90,130.32 = 28,528.80 : x
  2. Step 2: Convert to fraction form
    60,110.88/90,130.32 = 28,528.80/x
  3. Step 3: Cross multiply
    60,110.88x = 90,130.32 × 28,528.80
  4. Step 4: Simplify right side
    60,110.88x = 2,571,309,873.22
  5. Step 5: Solve for x
    x = 2,571,309,873.22/60,110.88
  6. Step 6: Final answer
    x = 42,776.11

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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.