Home / 64,140.39-88,538.40-57,414.15

Finding the Fourth Proportional to 64,140.39, 88,538.40 and 57,414.15

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Solution

The fourth proportional to 64,140.39, 88,538.40 and 57,414.15 is: 79,253.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,140.39 : 88,538.40 = 57,414.15 : x
  2. Step 2: Convert to fraction form
    64,140.39/88,538.40 = 57,414.15/x
  3. Step 3: Cross multiply
    64,140.39x = 88,538.40 × 57,414.15
  4. Step 4: Simplify right side
    64,140.39x = 5,083,356,978.36
  5. Step 5: Solve for x
    x = 5,083,356,978.36/64,140.39
  6. Step 6: Final answer
    x = 79,253.60

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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.