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Finding the Fourth Proportional to 86,335.37, 129,521.59 and 48,913.37

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Solution

The fourth proportional to 86,335.37, 129,521.59 and 48,913.37 is: 73,380.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,335.37 : 129,521.59 = 48,913.37 : x
  2. Step 2: Convert to fraction form
    86,335.37/129,521.59 = 48,913.37/x
  3. Step 3: Cross multiply
    86,335.37x = 129,521.59 × 48,913.37
  4. Step 4: Simplify right side
    86,335.37x = 6,335,337,656.18
  5. Step 5: Solve for x
    x = 6,335,337,656.18/86,335.37
  6. Step 6: Final answer
    x = 73,380.56

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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.