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Finding the Fourth Proportional to 60,498.76, 90,748.14 and 18,949

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Solution

The fourth proportional to 60,498.76, 90,748.14 and 18,949 is: 28,423.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,498.76 : 90,748.14 = 18,949 : x
  2. Step 2: Convert to fraction form
    60,498.76/90,748.14 = 18,949/x
  3. Step 3: Cross multiply
    60,498.76x = 90,748.14 × 18,949
  4. Step 4: Simplify right side
    60,498.76x = 1,719,586,504.86
  5. Step 5: Solve for x
    x = 1,719,586,504.86/60,498.76
  6. Step 6: Final answer
    x = 28,423.50

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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.