Home / 72,947.16-100,667.06-39,413.16

Finding the Fourth Proportional to 72,947.16, 100,667.06 and 39,413.16

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Solution

The fourth proportional to 72,947.16, 100,667.06 and 39,413.16 is: 54,390.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,947.16 : 100,667.06 = 39,413.16 : x
  2. Step 2: Convert to fraction form
    72,947.16/100,667.06 = 39,413.16/x
  3. Step 3: Cross multiply
    72,947.16x = 100,667.06 × 39,413.16
  4. Step 4: Simplify right side
    72,947.16x = 3,967,606,942.51
  5. Step 5: Solve for x
    x = 3,967,606,942.51/72,947.16
  6. Step 6: Final answer
    x = 54,390.15

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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.