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Finding the Fourth Proportional to 86,436, 119,281.68 and 48,710.25

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Solution

The fourth proportional to 86,436, 119,281.68 and 48,710.25 is: 67,220.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,436 : 119,281.68 = 48,710.25 : x
  2. Step 2: Convert to fraction form
    86,436/119,281.68 = 48,710.25/x
  3. Step 3: Cross multiply
    86,436x = 119,281.68 × 48,710.25
  4. Step 4: Simplify right side
    86,436x = 5,810,240,453.22
  5. Step 5: Solve for x
    x = 5,810,240,453.22/86,436
  6. Step 6: Final answer
    x = 67,220.15

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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.