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Finding the Fourth Proportional to 86,885.92, 119,898 and 49,154.08

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Solution

The fourth proportional to 86,885.92, 119,898 and 49,154.08 is: 67,830.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,885.92 : 119,898 = 49,154.08 : x
  2. Step 2: Convert to fraction form
    86,885.92/119,898 = 49,154.08/x
  3. Step 3: Cross multiply
    86,885.92x = 119,898 × 49,154.08
  4. Step 4: Simplify right side
    86,885.92x = 5,893,475,883.84
  5. Step 5: Solve for x
    x = 5,893,475,883.84/86,885.92
  6. Step 6: Final answer
    x = 67,830.05

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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.