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Finding the Fourth Proportional to 60,136.50, 90,178.62 and 28,555.68

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Solution

The fourth proportional to 60,136.50, 90,178.62 and 28,555.68 is: 42,821.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,136.50 : 90,178.62 = 28,555.68 : x
  2. Step 2: Convert to fraction form
    60,136.50/90,178.62 = 28,555.68/x
  3. Step 3: Cross multiply
    60,136.50x = 90,178.62 × 28,555.68
  4. Step 4: Simplify right side
    60,136.50x = 2,575,111,815.56
  5. Step 5: Solve for x
    x = 2,575,111,815.56/60,136.50
  6. Step 6: Final answer
    x = 42,821.11

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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.