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Finding the Fourth Proportional to 86,214.52, 118,977.12 and 48,488.77

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Solution

The fourth proportional to 86,214.52, 118,977.12 and 48,488.77 is: 66,915.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,214.52 : 118,977.12 = 48,488.77 : x
  2. Step 2: Convert to fraction form
    86,214.52/118,977.12 = 48,488.77/x
  3. Step 3: Cross multiply
    86,214.52x = 118,977.12 × 48,488.77
  4. Step 4: Simplify right side
    86,214.52x = 5,769,054,206.94
  5. Step 5: Solve for x
    x = 5,769,054,206.94/86,214.52
  6. Step 6: Final answer
    x = 66,915.11

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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.