Home / 83,413.31-115,109.07-47,602.40

Finding the Fourth Proportional to 83,413.31, 115,109.07 and 47,602.40

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Solution

The fourth proportional to 83,413.31, 115,109.07 and 47,602.40 is: 65,690.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,413.31 : 115,109.07 = 47,602.40 : x
  2. Step 2: Convert to fraction form
    83,413.31/115,109.07 = 47,602.40/x
  3. Step 3: Cross multiply
    83,413.31x = 115,109.07 × 47,602.40
  4. Step 4: Simplify right side
    83,413.31x = 5,479,467,993.77
  5. Step 5: Solve for x
    x = 5,479,467,993.77/83,413.31
  6. Step 6: Final answer
    x = 65,690.57

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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.