Home / 80,657.13-121,001.84-45,168.92

Finding the Fourth Proportional to 80,657.13, 121,001.84 and 45,168.92

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Solution

The fourth proportional to 80,657.13, 121,001.84 and 45,168.92 is: 67,762.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,657.13 : 121,001.84 = 45,168.92 : x
  2. Step 2: Convert to fraction form
    80,657.13/121,001.84 = 45,168.92/x
  3. Step 3: Cross multiply
    80,657.13x = 121,001.84 × 45,168.92
  4. Step 4: Simplify right side
    80,657.13x = 5,465,522,430.81
  5. Step 5: Solve for x
    x = 5,465,522,430.81/80,657.13
  6. Step 6: Final answer
    x = 67,762.42

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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.