Home / 91,787.11-137,720.12-49,697.26

Finding the Fourth Proportional to 91,787.11, 137,720.12 and 49,697.26

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Solution

The fourth proportional to 91,787.11, 137,720.12 and 49,697.26 is: 74,567.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,787.11 : 137,720.12 = 49,697.26 : x
  2. Step 2: Convert to fraction form
    91,787.11/137,720.12 = 49,697.26/x
  3. Step 3: Cross multiply
    91,787.11x = 137,720.12 × 49,697.26
  4. Step 4: Simplify right side
    91,787.11x = 6,844,312,018.08
  5. Step 5: Solve for x
    x = 6,844,312,018.08/91,787.11
  6. Step 6: Final answer
    x = 74,567.25

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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.