Home / 74,429.28-102,712.56-40,437.48

Finding the Fourth Proportional to 74,429.28, 102,712.56 and 40,437.48

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Solution

The fourth proportional to 74,429.28, 102,712.56 and 40,437.48 is: 55,803.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,429.28 : 102,712.56 = 40,437.48 : x
  2. Step 2: Convert to fraction form
    74,429.28/102,712.56 = 40,437.48/x
  3. Step 3: Cross multiply
    74,429.28x = 102,712.56 × 40,437.48
  4. Step 4: Simplify right side
    74,429.28x = 4,153,437,090.75
  5. Step 5: Solve for x
    x = 4,153,437,090.75/74,429.28
  6. Step 6: Final answer
    x = 55,803.81

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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.