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Finding the Fourth Proportional to 52,628.40, 72,619.20 and 29,959.20

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Solution

The fourth proportional to 52,628.40, 72,619.20 and 29,959.20 is: 41,339.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,628.40 : 72,619.20 = 29,959.20 : x
  2. Step 2: Convert to fraction form
    52,628.40/72,619.20 = 29,959.20/x
  3. Step 3: Cross multiply
    52,628.40x = 72,619.20 × 29,959.20
  4. Step 4: Simplify right side
    52,628.40x = 2,175,613,136.64
  5. Step 5: Solve for x
    x = 2,175,613,136.64/52,628.40
  6. Step 6: Final answer
    x = 41,339.15

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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.