Home / 76,746.89-115,192.32-47,222.39

Finding the Fourth Proportional to 76,746.89, 115,192.32 and 47,222.39

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Solution

The fourth proportional to 76,746.89, 115,192.32 and 47,222.39 is: 70,877.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,746.89 : 115,192.32 = 47,222.39 : x
  2. Step 2: Convert to fraction form
    76,746.89/115,192.32 = 47,222.39/x
  3. Step 3: Cross multiply
    76,746.89x = 115,192.32 × 47,222.39
  4. Step 4: Simplify right side
    76,746.89x = 5,439,656,084.08
  5. Step 5: Solve for x
    x = 5,439,656,084.08/76,746.89
  6. Step 6: Final answer
    x = 70,877.87

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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.