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Finding the Fourth Proportional to 61,413.68, 91,641.53 and 54,794.36

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Solution

The fourth proportional to 61,413.68, 91,641.53 and 54,794.36 is: 81,764.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,413.68 : 91,641.53 = 54,794.36 : x
  2. Step 2: Convert to fraction form
    61,413.68/91,641.53 = 54,794.36/x
  3. Step 3: Cross multiply
    61,413.68x = 91,641.53 × 54,794.36
  4. Step 4: Simplify right side
    61,413.68x = 5,021,438,985.77
  5. Step 5: Solve for x
    x = 5,021,438,985.77/61,413.68
  6. Step 6: Final answer
    x = 81,764.18

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.