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Finding the Fourth Proportional to 60,500.76, 90,751.14 and 18,951

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Solution

The fourth proportional to 60,500.76, 90,751.14 and 18,951 is: 28,426.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,500.76 : 90,751.14 = 18,951 : x
  2. Step 2: Convert to fraction form
    60,500.76/90,751.14 = 18,951/x
  3. Step 3: Cross multiply
    60,500.76x = 90,751.14 × 18,951
  4. Step 4: Simplify right side
    60,500.76x = 1,719,824,854.14
  5. Step 5: Solve for x
    x = 1,719,824,854.14/60,500.76
  6. Step 6: Final answer
    x = 28,426.50

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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.