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Finding the Fourth Proportional to 85,089.32, 127,649.50 and 25,918.28

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Solution

The fourth proportional to 85,089.32, 127,649.50 and 25,918.28 is: 38,882.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,089.32 : 127,649.50 = 25,918.28 : x
  2. Step 2: Convert to fraction form
    85,089.32/127,649.50 = 25,918.28/x
  3. Step 3: Cross multiply
    85,089.32x = 127,649.50 × 25,918.28
  4. Step 4: Simplify right side
    85,089.32x = 3,308,455,482.86
  5. Step 5: Solve for x
    x = 3,308,455,482.86/85,089.32
  6. Step 6: Final answer
    x = 38,882.15

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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.