Home / 81,259.74-112,136.40-45,451.26

Finding the Fourth Proportional to 81,259.74, 112,136.40 and 45,451.26

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Solution

The fourth proportional to 81,259.74, 112,136.40 and 45,451.26 is: 62,721.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,259.74 : 112,136.40 = 45,451.26 : x
  2. Step 2: Convert to fraction form
    81,259.74/112,136.40 = 45,451.26/x
  3. Step 3: Cross multiply
    81,259.74x = 112,136.40 × 45,451.26
  4. Step 4: Simplify right side
    81,259.74x = 5,096,740,671.86
  5. Step 5: Solve for x
    x = 5,096,740,671.86/81,259.74
  6. Step 6: Final answer
    x = 62,721.60

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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.