Home / 78,718.28-108,637.62-45,186.44

Finding the Fourth Proportional to 78,718.28, 108,637.62 and 45,186.44

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Solution

The fourth proportional to 78,718.28, 108,637.62 and 45,186.44 is: 62,360.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,718.28 : 108,637.62 = 45,186.44 : x
  2. Step 2: Convert to fraction form
    78,718.28/108,637.62 = 45,186.44/x
  3. Step 3: Cross multiply
    78,718.28x = 108,637.62 × 45,186.44
  4. Step 4: Simplify right side
    78,718.28x = 4,908,947,297.87
  5. Step 5: Solve for x
    x = 4,908,947,297.87/78,718.28
  6. Step 6: Final answer
    x = 62,360.96

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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.