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Finding the Fourth Proportional to 60,520.20, 90,683.10 and 39,719.40

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Solution

The fourth proportional to 60,520.20, 90,683.10 and 39,719.40 is: 59,515.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,520.20 : 90,683.10 = 39,719.40 : x
  2. Step 2: Convert to fraction form
    60,520.20/90,683.10 = 39,719.40/x
  3. Step 3: Cross multiply
    60,520.20x = 90,683.10 × 39,719.40
  4. Step 4: Simplify right side
    60,520.20x = 3,601,878,322.14
  5. Step 5: Solve for x
    x = 3,601,878,322.14/60,520.20
  6. Step 6: Final answer
    x = 59,515.31

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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.