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Finding the Fourth Proportional to 61,410.10, 91,896.45 and 42,601.90

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Solution

The fourth proportional to 61,410.10, 91,896.45 and 42,601.90 is: 63,751.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,410.10 : 91,896.45 = 42,601.90 : x
  2. Step 2: Convert to fraction form
    61,410.10/91,896.45 = 42,601.90/x
  3. Step 3: Cross multiply
    61,410.10x = 91,896.45 × 42,601.90
  4. Step 4: Simplify right side
    61,410.10x = 3,914,963,373.26
  5. Step 5: Solve for x
    x = 3,914,963,373.26/61,410.10
  6. Step 6: Final answer
    x = 63,751.13

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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.