Home / 91,640.77-137,467.53-38,312.60

Finding the Fourth Proportional to 91,640.77, 137,467.53 and 38,312.60

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Solution

The fourth proportional to 91,640.77, 137,467.53 and 38,312.60 is: 57,471.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,640.77 : 137,467.53 = 38,312.60 : x
  2. Step 2: Convert to fraction form
    91,640.77/137,467.53 = 38,312.60/x
  3. Step 3: Cross multiply
    91,640.77x = 137,467.53 × 38,312.60
  4. Step 4: Simplify right side
    91,640.77x = 5,266,737,802.54
  5. Step 5: Solve for x
    x = 5,266,737,802.54/91,640.77
  6. Step 6: Final answer
    x = 57,471.56

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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.