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Finding the Fourth Proportional to 61,259.49, 91,901.99 and 19,137.87

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Solution

The fourth proportional to 61,259.49, 91,901.99 and 19,137.87 is: 28,710.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,259.49 : 91,901.99 = 19,137.87 : x
  2. Step 2: Convert to fraction form
    61,259.49/91,901.99 = 19,137.87/x
  3. Step 3: Cross multiply
    61,259.49x = 91,901.99 × 19,137.87
  4. Step 4: Simplify right side
    61,259.49x = 1,758,807,897.04
  5. Step 5: Solve for x
    x = 1,758,807,897.04/61,259.49
  6. Step 6: Final answer
    x = 28,710.78

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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.