Home / 74,219.04-102,422.88-40,685.28

Finding the Fourth Proportional to 74,219.04, 102,422.88 and 40,685.28

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Solution

The fourth proportional to 74,219.04, 102,422.88 and 40,685.28 is: 56,146.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,219.04 : 102,422.88 = 40,685.28 : x
  2. Step 2: Convert to fraction form
    74,219.04/102,422.88 = 40,685.28/x
  3. Step 3: Cross multiply
    74,219.04x = 102,422.88 × 40,685.28
  4. Step 4: Simplify right side
    74,219.04x = 4,167,103,551.21
  5. Step 5: Solve for x
    x = 4,167,103,551.21/74,219.04
  6. Step 6: Final answer
    x = 56,146.02

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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.