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Finding the Fourth Proportional to 73,007.20, 109,510.80 and 68,924.80

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Solution

The fourth proportional to 73,007.20, 109,510.80 and 68,924.80 is: 103,387.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,007.20 : 109,510.80 = 68,924.80 : x
  2. Step 2: Convert to fraction form
    73,007.20/109,510.80 = 68,924.80/x
  3. Step 3: Cross multiply
    73,007.20x = 109,510.80 × 68,924.80
  4. Step 4: Simplify right side
    73,007.20x = 7,548,009,987.84
  5. Step 5: Solve for x
    x = 7,548,009,987.84/73,007.20
  6. Step 6: Final answer
    x = 103,387.20

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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.