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Finding the Fourth Proportional to 85,089.34, 127,647.88 and 25,123.88

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Solution

The fourth proportional to 85,089.34, 127,647.88 and 25,123.88 is: 37,689.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,089.34 : 127,647.88 = 25,123.88 : x
  2. Step 2: Convert to fraction form
    85,089.34/127,647.88 = 25,123.88/x
  3. Step 3: Cross multiply
    85,089.34x = 127,647.88 × 25,123.88
  4. Step 4: Simplify right side
    85,089.34x = 3,207,009,415.08
  5. Step 5: Solve for x
    x = 3,207,009,415.08/85,089.34
  6. Step 6: Final answer
    x = 37,689.91

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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.