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Finding the Fourth Proportional to 67,685.59, 93,415.88 and 38,999.75

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Solution

The fourth proportional to 67,685.59, 93,415.88 and 38,999.75 is: 53,825.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,685.59 : 93,415.88 = 38,999.75 : x
  2. Step 2: Convert to fraction form
    67,685.59/93,415.88 = 38,999.75/x
  3. Step 3: Cross multiply
    67,685.59x = 93,415.88 × 38,999.75
  4. Step 4: Simplify right side
    67,685.59x = 3,643,196,297.07
  5. Step 5: Solve for x
    x = 3,643,196,297.07/67,685.59
  6. Step 6: Final answer
    x = 53,825.29

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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.