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Finding the Fourth Proportional to 65,897.73, 90,935.46 and 38,670.03

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Solution

The fourth proportional to 65,897.73, 90,935.46 and 38,670.03 is: 53,362.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,897.73 : 90,935.46 = 38,670.03 : x
  2. Step 2: Convert to fraction form
    65,897.73/90,935.46 = 38,670.03/x
  3. Step 3: Cross multiply
    65,897.73x = 90,935.46 × 38,670.03
  4. Step 4: Simplify right side
    65,897.73x = 3,516,476,966.26
  5. Step 5: Solve for x
    x = 3,516,476,966.26/65,897.73
  6. Step 6: Final answer
    x = 53,362.64

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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.