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Finding the Fourth Proportional to 84,345.60, 126,518.40 and 82,887.60

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Solution

The fourth proportional to 84,345.60, 126,518.40 and 82,887.60 is: 124,331.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,345.60 : 126,518.40 = 82,887.60 : x
  2. Step 2: Convert to fraction form
    84,345.60/126,518.40 = 82,887.60/x
  3. Step 3: Cross multiply
    84,345.60x = 126,518.40 × 82,887.60
  4. Step 4: Simplify right side
    84,345.60x = 10,486,806,531.84
  5. Step 5: Solve for x
    x = 10,486,806,531.84/84,345.60
  6. Step 6: Final answer
    x = 124,331.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.