Home / 72,775.04-100,422.44-40,943.28

Finding the Fourth Proportional to 72,775.04, 100,422.44 and 40,943.28

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Solution

The fourth proportional to 72,775.04, 100,422.44 and 40,943.28 is: 56,497.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,775.04 : 100,422.44 = 40,943.28 : x
  2. Step 2: Convert to fraction form
    72,775.04/100,422.44 = 40,943.28/x
  3. Step 3: Cross multiply
    72,775.04x = 100,422.44 × 40,943.28
  4. Step 4: Simplify right side
    72,775.04x = 4,111,624,079.20
  5. Step 5: Solve for x
    x = 4,111,624,079.20/72,775.04
  6. Step 6: Final answer
    x = 56,497.72

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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.