Home / 80,752.40-121,200.60-47,430.80

Finding the Fourth Proportional to 80,752.40, 121,200.60 and 47,430.80

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Solution

The fourth proportional to 80,752.40, 121,200.60 and 47,430.80 is: 71,188.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,752.40 : 121,200.60 = 47,430.80 : x
  2. Step 2: Convert to fraction form
    80,752.40/121,200.60 = 47,430.80/x
  3. Step 3: Cross multiply
    80,752.40x = 121,200.60 × 47,430.80
  4. Step 4: Simplify right side
    80,752.40x = 5,748,641,418.48
  5. Step 5: Solve for x
    x = 5,748,641,418.48/80,752.40
  6. Step 6: Final answer
    x = 71,188.49

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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.