Home / 91,913.40-137,871.06-39,290.04

Finding the Fourth Proportional to 91,913.40, 137,871.06 and 39,290.04

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Solution

The fourth proportional to 91,913.40, 137,871.06 and 39,290.04 is: 58,935.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,913.40 : 137,871.06 = 39,290.04 : x
  2. Step 2: Convert to fraction form
    91,913.40/137,871.06 = 39,290.04/x
  3. Step 3: Cross multiply
    91,913.40x = 137,871.06 × 39,290.04
  4. Step 4: Simplify right side
    91,913.40x = 5,416,959,462.24
  5. Step 5: Solve for x
    x = 5,416,959,462.24/91,913.40
  6. Step 6: Final answer
    x = 58,935.47

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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.