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Finding the Fourth Proportional to 79,065.60, 109,109.52 and 45,072.95

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Solution

The fourth proportional to 79,065.60, 109,109.52 and 45,072.95 is: 62,200.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,065.60 : 109,109.52 = 45,072.95 : x
  2. Step 2: Convert to fraction form
    79,065.60/109,109.52 = 45,072.95/x
  3. Step 3: Cross multiply
    79,065.60x = 109,109.52 × 45,072.95
  4. Step 4: Simplify right side
    79,065.60x = 4,917,887,393.94
  5. Step 5: Solve for x
    x = 4,917,887,393.94/79,065.60
  6. Step 6: Final answer
    x = 62,200.09

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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.