Home / 64,439.09-88,920.01-36,139.31

Finding the Fourth Proportional to 64,439.09, 88,920.01 and 36,139.31

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Solution

The fourth proportional to 64,439.09, 88,920.01 and 36,139.31 is: 49,868.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,439.09 : 88,920.01 = 36,139.31 : x
  2. Step 2: Convert to fraction form
    64,439.09/88,920.01 = 36,139.31/x
  3. Step 3: Cross multiply
    64,439.09x = 88,920.01 × 36,139.31
  4. Step 4: Simplify right side
    64,439.09x = 3,213,507,806.59
  5. Step 5: Solve for x
    x = 3,213,507,806.59/64,439.09
  6. Step 6: Final answer
    x = 49,868.92

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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.