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Finding the Fourth Proportional to 105,603.75, 145,710.50 and 62,596.80

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Solution

The fourth proportional to 105,603.75, 145,710.50 and 62,596.80 is: 86,370.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,603.75 : 145,710.50 = 62,596.80 : x
  2. Step 2: Convert to fraction form
    105,603.75/145,710.50 = 62,596.80/x
  3. Step 3: Cross multiply
    105,603.75x = 145,710.50 × 62,596.80
  4. Step 4: Simplify right side
    105,603.75x = 9,121,010,713.42
  5. Step 5: Solve for x
    x = 9,121,010,713.42/105,603.75
  6. Step 6: Final answer
    x = 86,370.14

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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.