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Finding the Fourth Proportional to 86,745.84, 130,086.12 and 34,126.56

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Solution

The fourth proportional to 86,745.84, 130,086.12 and 34,126.56 is: 51,177.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,745.84 : 130,086.12 = 34,126.56 : x
  2. Step 2: Convert to fraction form
    86,745.84/130,086.12 = 34,126.56/x
  3. Step 3: Cross multiply
    86,745.84x = 130,086.12 × 34,126.56
  4. Step 4: Simplify right side
    86,745.84x = 4,439,391,779.35
  5. Step 5: Solve for x
    x = 4,439,391,779.35/86,745.84
  6. Step 6: Final answer
    x = 51,177.00

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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.