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Finding the Fourth Proportional to 67,897.39, 93,709.67 and 39,603.09

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Solution

The fourth proportional to 67,897.39, 93,709.67 and 39,603.09 is: 54,658.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,897.39 : 93,709.67 = 39,603.09 : x
  2. Step 2: Convert to fraction form
    67,897.39/93,709.67 = 39,603.09/x
  3. Step 3: Cross multiply
    67,897.39x = 93,709.67 × 39,603.09
  4. Step 4: Simplify right side
    67,897.39x = 3,711,191,828.32
  5. Step 5: Solve for x
    x = 3,711,191,828.32/67,897.39
  6. Step 6: Final answer
    x = 54,658.83

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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.