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Finding the Fourth Proportional to 79,597.69, 109,755.13 and 61,407.01

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Solution

The fourth proportional to 79,597.69, 109,755.13 and 61,407.01 is: 84,672.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,597.69 : 109,755.13 = 61,407.01 : x
  2. Step 2: Convert to fraction form
    79,597.69/109,755.13 = 61,407.01/x
  3. Step 3: Cross multiply
    79,597.69x = 109,755.13 × 61,407.01
  4. Step 4: Simplify right side
    79,597.69x = 6,739,734,291.57
  5. Step 5: Solve for x
    x = 6,739,734,291.57/79,597.69
  6. Step 6: Final answer
    x = 84,672.49

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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.