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Finding the Fourth Proportional to 79,305.68, 109,442.76 and 45,782.48

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Solution

The fourth proportional to 79,305.68, 109,442.76 and 45,782.48 is: 63,180.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,305.68 : 109,442.76 = 45,782.48 : x
  2. Step 2: Convert to fraction form
    79,305.68/109,442.76 = 45,782.48/x
  3. Step 3: Cross multiply
    79,305.68x = 109,442.76 × 45,782.48
  4. Step 4: Simplify right side
    79,305.68x = 5,010,560,970.84
  5. Step 5: Solve for x
    x = 5,010,560,970.84/79,305.68
  6. Step 6: Final answer
    x = 63,180.35

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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.