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Finding the Fourth Proportional to 86,793.12, 130,101.60 and 34,239.84

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Solution

The fourth proportional to 86,793.12, 130,101.60 and 34,239.84 is: 51,325.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,793.12 : 130,101.60 = 34,239.84 : x
  2. Step 2: Convert to fraction form
    86,793.12/130,101.60 = 34,239.84/x
  3. Step 3: Cross multiply
    86,793.12x = 130,101.60 × 34,239.84
  4. Step 4: Simplify right side
    86,793.12x = 4,454,657,967.74
  5. Step 5: Solve for x
    x = 4,454,657,967.74/86,793.12
  6. Step 6: Final answer
    x = 51,325.01

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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.