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Finding the Fourth Proportional to 60,912, 91,381.44 and 25,881.60

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Solution

The fourth proportional to 60,912, 91,381.44 and 25,881.60 is: 38,828.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,912 : 91,381.44 = 25,881.60 : x
  2. Step 2: Convert to fraction form
    60,912/91,381.44 = 25,881.60/x
  3. Step 3: Cross multiply
    60,912x = 91,381.44 × 25,881.60
  4. Step 4: Simplify right side
    60,912x = 2,365,097,877.50
  5. Step 5: Solve for x
    x = 2,365,097,877.50/60,912
  6. Step 6: Final answer
    x = 38,828.11

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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.