Home / 74,143.83-102,318.53-40,152.58

Finding the Fourth Proportional to 74,143.83, 102,318.53 and 40,152.58

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Solution

The fourth proportional to 74,143.83, 102,318.53 and 40,152.58 is: 55,410.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,143.83 : 102,318.53 = 40,152.58 : x
  2. Step 2: Convert to fraction form
    74,143.83/102,318.53 = 40,152.58/x
  3. Step 3: Cross multiply
    74,143.83x = 102,318.53 × 40,152.58
  4. Step 4: Simplify right side
    74,143.83x = 4,108,352,961.31
  5. Step 5: Solve for x
    x = 4,108,352,961.31/74,143.83
  6. Step 6: Final answer
    x = 55,410.58

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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.