Home / 66,490.14-91,768.30-39,634.40

Finding the Fourth Proportional to 66,490.14, 91,768.30 and 39,634.40

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Solution

The fourth proportional to 66,490.14, 91,768.30 and 39,634.40 is: 54,702.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,490.14 : 91,768.30 = 39,634.40 : x
  2. Step 2: Convert to fraction form
    66,490.14/91,768.30 = 39,634.40/x
  3. Step 3: Cross multiply
    66,490.14x = 91,768.30 × 39,634.40
  4. Step 4: Simplify right side
    66,490.14x = 3,637,181,509.52
  5. Step 5: Solve for x
    x = 3,637,181,509.52/66,490.14
  6. Step 6: Final answer
    x = 54,702.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.