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Finding the Fourth Proportional to 60,378.76, 90,568.14 and 18,829

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Solution

The fourth proportional to 60,378.76, 90,568.14 and 18,829 is: 28,243.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,378.76 : 90,568.14 = 18,829 : x
  2. Step 2: Convert to fraction form
    60,378.76/90,568.14 = 18,829/x
  3. Step 3: Cross multiply
    60,378.76x = 90,568.14 × 18,829
  4. Step 4: Simplify right side
    60,378.76x = 1,705,307,508.06
  5. Step 5: Solve for x
    x = 1,705,307,508.06/60,378.76
  6. Step 6: Final answer
    x = 28,243.50

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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.