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Finding the Fourth Proportional to 68,897.31, 95,070.94 and 38,685.93

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Solution

The fourth proportional to 68,897.31, 95,070.94 and 38,685.93 is: 53,382.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,897.31 : 95,070.94 = 38,685.93 : x
  2. Step 2: Convert to fraction form
    68,897.31/95,070.94 = 38,685.93/x
  3. Step 3: Cross multiply
    68,897.31x = 95,070.94 × 38,685.93
  4. Step 4: Simplify right side
    68,897.31x = 3,677,907,729.87
  5. Step 5: Solve for x
    x = 3,677,907,729.87/68,897.31
  6. Step 6: Final answer
    x = 53,382.46

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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.