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Finding the Fourth Proportional to 67,673.16, 93,398.94 and 38,987.28

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Solution

The fourth proportional to 67,673.16, 93,398.94 and 38,987.28 is: 53,808.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,673.16 : 93,398.94 = 38,987.28 : x
  2. Step 2: Convert to fraction form
    67,673.16/93,398.94 = 38,987.28/x
  3. Step 3: Cross multiply
    67,673.16x = 93,398.94 × 38,987.28
  4. Step 4: Simplify right side
    67,673.16x = 3,641,370,625.48
  5. Step 5: Solve for x
    x = 3,641,370,625.48/67,673.16
  6. Step 6: Final answer
    x = 53,808.20

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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.