Home / 42,338.16-63,568.80-31,140.72

Finding the Fourth Proportional to 42,338.16, 63,568.80 and 31,140.72

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Solution

The fourth proportional to 42,338.16, 63,568.80 and 31,140.72 is: 46,756.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,338.16 : 63,568.80 = 31,140.72 : x
  2. Step 2: Convert to fraction form
    42,338.16/63,568.80 = 31,140.72/x
  3. Step 3: Cross multiply
    42,338.16x = 63,568.80 × 31,140.72
  4. Step 4: Simplify right side
    42,338.16x = 1,979,578,201.54
  5. Step 5: Solve for x
    x = 1,979,578,201.54/42,338.16
  6. Step 6: Final answer
    x = 46,756.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.