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Finding the Fourth Proportional to 67,979.94, 93,808.66 and 39,300.16

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Solution

The fourth proportional to 67,979.94, 93,808.66 and 39,300.16 is: 54,232.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,979.94 : 93,808.66 = 39,300.16 : x
  2. Step 2: Convert to fraction form
    67,979.94/93,808.66 = 39,300.16/x
  3. Step 3: Cross multiply
    67,979.94x = 93,808.66 × 39,300.16
  4. Step 4: Simplify right side
    67,979.94x = 3,686,695,347.39
  5. Step 5: Solve for x
    x = 3,686,695,347.39/67,979.94
  6. Step 6: Final answer
    x = 54,232.11

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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.