Home / 72,128.19-99,535.07-40,297.33

Finding the Fourth Proportional to 72,128.19, 99,535.07 and 40,297.33

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Solution

The fourth proportional to 72,128.19, 99,535.07 and 40,297.33 is: 55,609.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,128.19 : 99,535.07 = 40,297.33 : x
  2. Step 2: Convert to fraction form
    72,128.19/99,535.07 = 40,297.33/x
  3. Step 3: Cross multiply
    72,128.19x = 99,535.07 × 40,297.33
  4. Step 4: Simplify right side
    72,128.19x = 4,010,996,863.20
  5. Step 5: Solve for x
    x = 4,010,996,863.20/72,128.19
  6. Step 6: Final answer
    x = 55,609.28

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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.