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Finding the Fourth Proportional to 86,102.70, 129,348.48 and 51,065.34

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Solution

The fourth proportional to 86,102.70, 129,348.48 and 51,065.34 is: 76,713.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,102.70 : 129,348.48 = 51,065.34 : x
  2. Step 2: Convert to fraction form
    86,102.70/129,348.48 = 51,065.34/x
  3. Step 3: Cross multiply
    86,102.70x = 129,348.48 × 51,065.34
  4. Step 4: Simplify right side
    86,102.70x = 6,605,224,109.68
  5. Step 5: Solve for x
    x = 6,605,224,109.68/86,102.70
  6. Step 6: Final answer
    x = 76,713.32

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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.