Home / 91,815.26-137,676.01-53,938.51

Finding the Fourth Proportional to 91,815.26, 137,676.01 and 53,938.51

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Solution

The fourth proportional to 91,815.26, 137,676.01 and 53,938.51 is: 80,880.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,815.26 : 137,676.01 = 53,938.51 : x
  2. Step 2: Convert to fraction form
    91,815.26/137,676.01 = 53,938.51/x
  3. Step 3: Cross multiply
    91,815.26x = 137,676.01 × 53,938.51
  4. Step 4: Simplify right side
    91,815.26x = 7,426,038,228.26
  5. Step 5: Solve for x
    x = 7,426,038,228.26/91,815.26
  6. Step 6: Final answer
    x = 80,880.22

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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.