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Finding the Fourth Proportional to 61,155.92, 91,742.38 and 21,703.66

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Solution

The fourth proportional to 61,155.92, 91,742.38 and 21,703.66 is: 32,558.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,155.92 : 91,742.38 = 21,703.66 : x
  2. Step 2: Convert to fraction form
    61,155.92/91,742.38 = 21,703.66/x
  3. Step 3: Cross multiply
    61,155.92x = 91,742.38 × 21,703.66
  4. Step 4: Simplify right side
    61,155.92x = 1,991,145,423.11
  5. Step 5: Solve for x
    x = 1,991,145,423.11/61,155.92
  6. Step 6: Final answer
    x = 32,558.51

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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.