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Finding the Fourth Proportional to 60,683.76, 90,987.60 and 18,549.84

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Solution

The fourth proportional to 60,683.76, 90,987.60 and 18,549.84 is: 27,813.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,683.76 : 90,987.60 = 18,549.84 : x
  2. Step 2: Convert to fraction form
    60,683.76/90,987.60 = 18,549.84/x
  3. Step 3: Cross multiply
    60,683.76x = 90,987.60 × 18,549.84
  4. Step 4: Simplify right side
    60,683.76x = 1,687,805,421.98
  5. Step 5: Solve for x
    x = 1,687,805,421.98/60,683.76
  6. Step 6: Final answer
    x = 27,813.13

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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.