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Finding the Fourth Proportional to 85,413.44, 117,859.56 and 47,689.28

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Solution

The fourth proportional to 85,413.44, 117,859.56 and 47,689.28 is: 65,805.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,413.44 : 117,859.56 = 47,689.28 : x
  2. Step 2: Convert to fraction form
    85,413.44/117,859.56 = 47,689.28/x
  3. Step 3: Cross multiply
    85,413.44x = 117,859.56 × 47,689.28
  4. Step 4: Simplify right side
    85,413.44x = 5,620,637,557.52
  5. Step 5: Solve for x
    x = 5,620,637,557.52/85,413.44
  6. Step 6: Final answer
    x = 65,805.07

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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.