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Finding the Fourth Proportional to 61,018.19, 91,528.91 and 19,465.19

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Solution

The fourth proportional to 61,018.19, 91,528.91 and 19,465.19 is: 29,198.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,018.19 : 91,528.91 = 19,465.19 : x
  2. Step 2: Convert to fraction form
    61,018.19/91,528.91 = 19,465.19/x
  3. Step 3: Cross multiply
    61,018.19x = 91,528.91 × 19,465.19
  4. Step 4: Simplify right side
    61,018.19x = 1,781,627,623.64
  5. Step 5: Solve for x
    x = 1,781,627,623.64/61,018.19
  6. Step 6: Final answer
    x = 29,198.30

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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.