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Finding the Fourth Proportional to 85,084.68, 127,645.47 and 25,918.80

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Solution

The fourth proportional to 85,084.68, 127,645.47 and 25,918.80 is: 38,883.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,084.68 : 127,645.47 = 25,918.80 : x
  2. Step 2: Convert to fraction form
    85,084.68/127,645.47 = 25,918.80/x
  3. Step 3: Cross multiply
    85,084.68x = 127,645.47 × 25,918.80
  4. Step 4: Simplify right side
    85,084.68x = 3,308,417,407.84
  5. Step 5: Solve for x
    x = 3,308,417,407.84/85,084.68
  6. Step 6: Final answer
    x = 38,883.82

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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.