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Finding the Fourth Proportional to 86,326.98, 119,122.65 and 63,678.21

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Solution

The fourth proportional to 86,326.98, 119,122.65 and 63,678.21 is: 87,869.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,326.98 : 119,122.65 = 63,678.21 : x
  2. Step 2: Convert to fraction form
    86,326.98/119,122.65 = 63,678.21/x
  3. Step 3: Cross multiply
    86,326.98x = 119,122.65 × 63,678.21
  4. Step 4: Simplify right side
    86,326.98x = 7,585,517,122.46
  5. Step 5: Solve for x
    x = 7,585,517,122.46/86,326.98
  6. Step 6: Final answer
    x = 87,869.60

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1.5x scale

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.