Home / 72,428.25-99,945.93-40,164.51

Finding the Fourth Proportional to 72,428.25, 99,945.93 and 40,164.51

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Solution

The fourth proportional to 72,428.25, 99,945.93 and 40,164.51 is: 55,424.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,428.25 : 99,945.93 = 40,164.51 : x
  2. Step 2: Convert to fraction form
    72,428.25/99,945.93 = 40,164.51/x
  3. Step 3: Cross multiply
    72,428.25x = 99,945.93 × 40,164.51
  4. Step 4: Simplify right side
    72,428.25x = 4,014,279,304.94
  5. Step 5: Solve for x
    x = 4,014,279,304.94/72,428.25
  6. Step 6: Final answer
    x = 55,424.22

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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.