Home / 80,784.30-121,176.45-45,792.30

Finding the Fourth Proportional to 80,784.30, 121,176.45 and 45,792.30

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Solution

The fourth proportional to 80,784.30, 121,176.45 and 45,792.30 is: 68,688.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,784.30 : 121,176.45 = 45,792.30 : x
  2. Step 2: Convert to fraction form
    80,784.30/121,176.45 = 45,792.30/x
  3. Step 3: Cross multiply
    80,784.30x = 121,176.45 × 45,792.30
  4. Step 4: Simplify right side
    80,784.30x = 5,548,948,351.34
  5. Step 5: Solve for x
    x = 5,548,948,351.34/80,784.30
  6. Step 6: Final answer
    x = 68,688.45

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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.