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Finding the Fourth Proportional to 105,607.75, 145,716.01 and 62,600.80

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Solution

The fourth proportional to 105,607.75, 145,716.01 and 62,600.80 is: 86,375.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,607.75 : 145,716.01 = 62,600.80 : x
  2. Step 2: Convert to fraction form
    105,607.75/145,716.01 = 62,600.80/x
  3. Step 3: Cross multiply
    105,607.75x = 145,716.01 × 62,600.80
  4. Step 4: Simplify right side
    105,607.75x = 9,121,938,798.81
  5. Step 5: Solve for x
    x = 9,121,938,798.81/105,607.75
  6. Step 6: Final answer
    x = 86,375.66

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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.