Home / 78,169.17-107,832.65-47,961.23

Finding the Fourth Proportional to 78,169.17, 107,832.65 and 47,961.23

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Solution

The fourth proportional to 78,169.17, 107,832.65 and 47,961.23 is: 66,161.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,169.17 : 107,832.65 = 47,961.23 : x
  2. Step 2: Convert to fraction form
    78,169.17/107,832.65 = 47,961.23/x
  3. Step 3: Cross multiply
    78,169.17x = 107,832.65 × 47,961.23
  4. Step 4: Simplify right side
    78,169.17x = 5,171,785,749.19
  5. Step 5: Solve for x
    x = 5,171,785,749.19/78,169.17
  6. Step 6: Final answer
    x = 66,161.45

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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.