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Finding the Fourth Proportional to 61,158.42, 91,746.75 and 21,712.23

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Solution

The fourth proportional to 61,158.42, 91,746.75 and 21,712.23 is: 32,571.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,158.42 : 91,746.75 = 21,712.23 : x
  2. Step 2: Convert to fraction form
    61,158.42/91,746.75 = 21,712.23/x
  3. Step 3: Cross multiply
    61,158.42x = 91,746.75 × 21,712.23
  4. Step 4: Simplify right side
    61,158.42x = 1,992,026,537.75
  5. Step 5: Solve for x
    x = 1,992,026,537.75/61,158.42
  6. Step 6: Final answer
    x = 32,571.58

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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.