Home / 79,031.48-109,103.10-61,085.96

Finding the Fourth Proportional to 79,031.48, 109,103.10 and 61,085.96

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Solution

The fourth proportional to 79,031.48, 109,103.10 and 61,085.96 is: 84,329.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,031.48 : 109,103.10 = 61,085.96 : x
  2. Step 2: Convert to fraction form
    79,031.48/109,103.10 = 61,085.96/x
  3. Step 3: Cross multiply
    79,031.48x = 109,103.10 × 61,085.96
  4. Step 4: Simplify right side
    79,031.48x = 6,664,667,602.48
  5. Step 5: Solve for x
    x = 6,664,667,602.48/79,031.48
  6. Step 6: Final answer
    x = 84,329.28

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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.