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Finding the Fourth Proportional to 60,496.76, 90,745.14 and 18,947

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Solution

The fourth proportional to 60,496.76, 90,745.14 and 18,947 is: 28,420.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,496.76 : 90,745.14 = 18,947 : x
  2. Step 2: Convert to fraction form
    60,496.76/90,745.14 = 18,947/x
  3. Step 3: Cross multiply
    60,496.76x = 90,745.14 × 18,947
  4. Step 4: Simplify right side
    60,496.76x = 1,719,348,167.58
  5. Step 5: Solve for x
    x = 1,719,348,167.58/60,496.76
  6. Step 6: Final answer
    x = 28,420.50

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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.