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Finding the Fourth Proportional to 61,018.75, 91,529.75 and 19,465.75

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Solution

The fourth proportional to 61,018.75, 91,529.75 and 19,465.75 is: 29,199.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,018.75 : 91,529.75 = 19,465.75 : x
  2. Step 2: Convert to fraction form
    61,018.75/91,529.75 = 19,465.75/x
  3. Step 3: Cross multiply
    61,018.75x = 91,529.75 × 19,465.75
  4. Step 4: Simplify right side
    61,018.75x = 1,781,695,231.06
  5. Step 5: Solve for x
    x = 1,781,695,231.06/61,018.75
  6. Step 6: Final answer
    x = 29,199.14

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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.