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Finding the Fourth Proportional to 79,186.65, 109,279.34 and 45,194.46

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Solution

The fourth proportional to 79,186.65, 109,279.34 and 45,194.46 is: 62,369.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,186.65 : 109,279.34 = 45,194.46 : x
  2. Step 2: Convert to fraction form
    79,186.65/109,279.34 = 45,194.46/x
  3. Step 3: Cross multiply
    79,186.65x = 109,279.34 × 45,194.46
  4. Step 4: Simplify right side
    79,186.65x = 4,938,820,214.06
  5. Step 5: Solve for x
    x = 4,938,820,214.06/79,186.65
  6. Step 6: Final answer
    x = 62,369.35

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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.