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Finding the Fourth Proportional to 86,812.60, 130,233.30 and 34,223.80

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Solution

The fourth proportional to 86,812.60, 130,233.30 and 34,223.80 is: 51,341.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,812.60 : 130,233.30 = 34,223.80 : x
  2. Step 2: Convert to fraction form
    86,812.60/130,233.30 = 34,223.80/x
  3. Step 3: Cross multiply
    86,812.60x = 130,233.30 × 34,223.80
  4. Step 4: Simplify right side
    86,812.60x = 4,457,078,412.54
  5. Step 5: Solve for x
    x = 4,457,078,412.54/86,812.60
  6. Step 6: Final answer
    x = 51,341.38

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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.