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Finding the Fourth Proportional to 79,030.80, 109,059.12 and 43,222.14

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Solution

The fourth proportional to 79,030.80, 109,059.12 and 43,222.14 is: 59,644.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,030.80 : 109,059.12 = 43,222.14 : x
  2. Step 2: Convert to fraction form
    79,030.80/109,059.12 = 43,222.14/x
  3. Step 3: Cross multiply
    79,030.80x = 109,059.12 × 43,222.14
  4. Step 4: Simplify right side
    79,030.80x = 4,713,768,552.92
  5. Step 5: Solve for x
    x = 4,713,768,552.92/79,030.80
  6. Step 6: Final answer
    x = 59,644.70

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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.