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Finding the Fourth Proportional to 86,376, 119,238.84 and 60,903.12

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Solution

The fourth proportional to 86,376, 119,238.84 and 60,903.12 is: 84,074.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,376 : 119,238.84 = 60,903.12 : x
  2. Step 2: Convert to fraction form
    86,376/119,238.84 = 60,903.12/x
  3. Step 3: Cross multiply
    86,376x = 119,238.84 × 60,903.12
  4. Step 4: Simplify right side
    86,376x = 7,262,017,381.18
  5. Step 5: Solve for x
    x = 7,262,017,381.18/86,376
  6. Step 6: Final answer
    x = 84,074.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.