Home / 91,916.57-137,680.97-42,038.60

Finding the Fourth Proportional to 91,916.57, 137,680.97 and 42,038.60

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Solution

The fourth proportional to 91,916.57, 137,680.97 and 42,038.60 is: 62,969.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,916.57 : 137,680.97 = 42,038.60 : x
  2. Step 2: Convert to fraction form
    91,916.57/137,680.97 = 42,038.60/x
  3. Step 3: Cross multiply
    91,916.57x = 137,680.97 × 42,038.60
  4. Step 4: Simplify right side
    91,916.57x = 5,787,914,326.84
  5. Step 5: Solve for x
    x = 5,787,914,326.84/91,916.57
  6. Step 6: Final answer
    x = 62,969.21

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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.