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Finding the Fourth Proportional to 47,459.80, 71,189.70 and 39,683.80

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Solution

The fourth proportional to 47,459.80, 71,189.70 and 39,683.80 is: 59,525.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,459.80 : 71,189.70 = 39,683.80 : x
  2. Step 2: Convert to fraction form
    47,459.80/71,189.70 = 39,683.80/x
  3. Step 3: Cross multiply
    47,459.80x = 71,189.70 × 39,683.80
  4. Step 4: Simplify right side
    47,459.80x = 2,825,077,816.86
  5. Step 5: Solve for x
    x = 2,825,077,816.86/47,459.80
  6. Step 6: Final answer
    x = 59,525.70

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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.