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Finding the Fourth Proportional to 79,878, 109,972.52 and 62,852.24

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Solution

The fourth proportional to 79,878, 109,972.52 and 62,852.24 is: 86,532.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,878 : 109,972.52 = 62,852.24 : x
  2. Step 2: Convert to fraction form
    79,878/109,972.52 = 62,852.24/x
  3. Step 3: Cross multiply
    79,878x = 109,972.52 × 62,852.24
  4. Step 4: Simplify right side
    79,878x = 6,912,019,220.44
  5. Step 5: Solve for x
    x = 6,912,019,220.44/79,878
  6. Step 6: Final answer
    x = 86,532.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.