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Finding the Fourth Proportional to 71,726.70, 98,914.89 and 45,893.43

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Solution

The fourth proportional to 71,726.70, 98,914.89 and 45,893.43 is: 63,289.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,726.70 : 98,914.89 = 45,893.43 : x
  2. Step 2: Convert to fraction form
    71,726.70/98,914.89 = 45,893.43/x
  3. Step 3: Cross multiply
    71,726.70x = 98,914.89 × 45,893.43
  4. Step 4: Simplify right side
    71,726.70x = 4,539,543,580.17
  5. Step 5: Solve for x
    x = 4,539,543,580.17/71,726.70
  6. Step 6: Final answer
    x = 63,289.45

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1.5x scale

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.