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Finding the Fourth Proportional to 79,126.80, 109,192.24 and 45,146.28

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Solution

The fourth proportional to 79,126.80, 109,192.24 and 45,146.28 is: 62,300.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,126.80 : 109,192.24 = 45,146.28 : x
  2. Step 2: Convert to fraction form
    79,126.80/109,192.24 = 45,146.28/x
  3. Step 3: Cross multiply
    79,126.80x = 109,192.24 × 45,146.28
  4. Step 4: Simplify right side
    79,126.80x = 4,929,623,440.87
  5. Step 5: Solve for x
    x = 4,929,623,440.87/79,126.80
  6. Step 6: Final answer
    x = 62,300.30

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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.