Home / 78,557.86-117,838.05-74,570.23

Finding the Fourth Proportional to 78,557.86, 117,838.05 and 74,570.23

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Solution

The fourth proportional to 78,557.86, 117,838.05 and 74,570.23 is: 111,856.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,557.86 : 117,838.05 = 74,570.23 : x
  2. Step 2: Convert to fraction form
    78,557.86/117,838.05 = 74,570.23/x
  3. Step 3: Cross multiply
    78,557.86x = 117,838.05 × 74,570.23
  4. Step 4: Simplify right side
    78,557.86x = 8,787,210,491.25
  5. Step 5: Solve for x
    x = 8,787,210,491.25/78,557.86
  6. Step 6: Final answer
    x = 111,856.54

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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.