Home / 65,928.57-90,985.65-39,065.39

Finding the Fourth Proportional to 65,928.57, 90,985.65 and 39,065.39

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Solution

The fourth proportional to 65,928.57, 90,985.65 and 39,065.39 is: 53,912.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,928.57 : 90,985.65 = 39,065.39 : x
  2. Step 2: Convert to fraction form
    65,928.57/90,985.65 = 39,065.39/x
  3. Step 3: Cross multiply
    65,928.57x = 90,985.65 × 39,065.39
  4. Step 4: Simplify right side
    65,928.57x = 3,554,389,641.43
  5. Step 5: Solve for x
    x = 3,554,389,641.43/65,928.57
  6. Step 6: Final answer
    x = 53,912.74

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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.