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Finding the Fourth Proportional to 66,553.74, 91,840.14 and 38,259.48

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Solution

The fourth proportional to 66,553.74, 91,840.14 and 38,259.48 is: 52,795.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,553.74 : 91,840.14 = 38,259.48 : x
  2. Step 2: Convert to fraction form
    66,553.74/91,840.14 = 38,259.48/x
  3. Step 3: Cross multiply
    66,553.74x = 91,840.14 × 38,259.48
  4. Step 4: Simplify right side
    66,553.74x = 3,513,755,999.53
  5. Step 5: Solve for x
    x = 3,513,755,999.53/66,553.74
  6. Step 6: Final answer
    x = 52,795.77

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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.