Home / 80,802.40-121,203.60-52,808.80

Finding the Fourth Proportional to 80,802.40, 121,203.60 and 52,808.80

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Solution

The fourth proportional to 80,802.40, 121,203.60 and 52,808.80 is: 79,213.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,802.40 : 121,203.60 = 52,808.80 : x
  2. Step 2: Convert to fraction form
    80,802.40/121,203.60 = 52,808.80/x
  3. Step 3: Cross multiply
    80,802.40x = 121,203.60 × 52,808.80
  4. Step 4: Simplify right side
    80,802.40x = 6,400,616,671.68
  5. Step 5: Solve for x
    x = 6,400,616,671.68/80,802.40
  6. Step 6: Final answer
    x = 79,213.20

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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.