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Finding the Fourth Proportional to 68,143, 94,037.40 and 38,335

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Solution

The fourth proportional to 68,143, 94,037.40 and 38,335 is: 52,902.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,143 : 94,037.40 = 38,335 : x
  2. Step 2: Convert to fraction form
    68,143/94,037.40 = 38,335/x
  3. Step 3: Cross multiply
    68,143x = 94,037.40 × 38,335
  4. Step 4: Simplify right side
    68,143x = 3,604,923,729
  5. Step 5: Solve for x
    x = 3,604,923,729/68,143
  6. Step 6: Final answer
    x = 52,902.33

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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.