Home / 74,964.60-103,455-43,138.26

Finding the Fourth Proportional to 74,964.60, 103,455 and 43,138.26

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Solution

The fourth proportional to 74,964.60, 103,455 and 43,138.26 is: 59,533.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,964.60 : 103,455 = 43,138.26 : x
  2. Step 2: Convert to fraction form
    74,964.60/103,455 = 43,138.26/x
  3. Step 3: Cross multiply
    74,964.60x = 103,455 × 43,138.26
  4. Step 4: Simplify right side
    74,964.60x = 4,462,868,688.30
  5. Step 5: Solve for x
    x = 4,462,868,688.30/74,964.60
  6. Step 6: Final answer
    x = 59,533.02

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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.