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Finding the Fourth Proportional to 67,656.48, 101,494.44 and 20,913

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Solution

The fourth proportional to 67,656.48, 101,494.44 and 20,913 is: 31,372.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,656.48 : 101,494.44 = 20,913 : x
  2. Step 2: Convert to fraction form
    67,656.48/101,494.44 = 20,913/x
  3. Step 3: Cross multiply
    67,656.48x = 101,494.44 × 20,913
  4. Step 4: Simplify right side
    67,656.48x = 2,122,553,223.72
  5. Step 5: Solve for x
    x = 2,122,553,223.72/67,656.48
  6. Step 6: Final answer
    x = 31,372.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.