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Finding the Fourth Proportional to 60,683.80, 91,025.70 and 39,688.60

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Solution

The fourth proportional to 60,683.80, 91,025.70 and 39,688.60 is: 59,532.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,683.80 : 91,025.70 = 39,688.60 : x
  2. Step 2: Convert to fraction form
    60,683.80/91,025.70 = 39,688.60/x
  3. Step 3: Cross multiply
    60,683.80x = 91,025.70 × 39,688.60
  4. Step 4: Simplify right side
    60,683.80x = 3,612,682,597.02
  5. Step 5: Solve for x
    x = 3,612,682,597.02/60,683.80
  6. Step 6: Final answer
    x = 59,532.90

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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.