Home / 81,257.22-112,136.13-45,448.74

Finding the Fourth Proportional to 81,257.22, 112,136.13 and 45,448.74

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Solution

The fourth proportional to 81,257.22, 112,136.13 and 45,448.74 is: 62,719.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,257.22 : 112,136.13 = 45,448.74 : x
  2. Step 2: Convert to fraction form
    81,257.22/112,136.13 = 45,448.74/x
  3. Step 3: Cross multiply
    81,257.22x = 112,136.13 × 45,448.74
  4. Step 4: Simplify right side
    81,257.22x = 5,096,445,816.98
  5. Step 5: Solve for x
    x = 5,096,445,816.98/81,257.22
  6. Step 6: Final answer
    x = 62,719.91

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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.