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Finding the Fourth Proportional to 52,134.40, 71,940.80 and 30,910.08

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Solution

The fourth proportional to 52,134.40, 71,940.80 and 30,910.08 is: 42,653.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,134.40 : 71,940.80 = 30,910.08 : x
  2. Step 2: Convert to fraction form
    52,134.40/71,940.80 = 30,910.08/x
  3. Step 3: Cross multiply
    52,134.40x = 71,940.80 × 30,910.08
  4. Step 4: Simplify right side
    52,134.40x = 2,223,695,883.26
  5. Step 5: Solve for x
    x = 2,223,695,883.26/52,134.40
  6. Step 6: Final answer
    x = 42,653.14

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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.