Home / 72,386.09-99,896.91-40,565.24

Finding the Fourth Proportional to 72,386.09, 99,896.91 and 40,565.24

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Solution

The fourth proportional to 72,386.09, 99,896.91 and 40,565.24 is: 55,982.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,386.09 : 99,896.91 = 40,565.24 : x
  2. Step 2: Convert to fraction form
    72,386.09/99,896.91 = 40,565.24/x
  3. Step 3: Cross multiply
    72,386.09x = 99,896.91 × 40,565.24
  4. Step 4: Simplify right side
    72,386.09x = 4,052,342,129.41
  5. Step 5: Solve for x
    x = 4,052,342,129.41/72,386.09
  6. Step 6: Final answer
    x = 55,982.33

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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.