Home / 77,916.09-107,439.69-49,585.53

Finding the Fourth Proportional to 77,916.09, 107,439.69 and 49,585.53

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Solution

The fourth proportional to 77,916.09, 107,439.69 and 49,585.53 is: 68,374.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,916.09 : 107,439.69 = 49,585.53 : x
  2. Step 2: Convert to fraction form
    77,916.09/107,439.69 = 49,585.53/x
  3. Step 3: Cross multiply
    77,916.09x = 107,439.69 × 49,585.53
  4. Step 4: Simplify right side
    77,916.09x = 5,327,453,971.69
  5. Step 5: Solve for x
    x = 5,327,453,971.69/77,916.09
  6. Step 6: Final answer
    x = 68,374.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.