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Finding the Fourth Proportional to 79,790.47, 110,115.76 and 43,980.39

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Solution

The fourth proportional to 79,790.47, 110,115.76 and 43,980.39 is: 60,695.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,790.47 : 110,115.76 = 43,980.39 : x
  2. Step 2: Convert to fraction form
    79,790.47/110,115.76 = 43,980.39/x
  3. Step 3: Cross multiply
    79,790.47x = 110,115.76 × 43,980.39
  4. Step 4: Simplify right side
    79,790.47x = 4,842,934,069.95
  5. Step 5: Solve for x
    x = 4,842,934,069.95/79,790.47
  6. Step 6: Final answer
    x = 60,695.65

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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.