Home / 77,431.68-116,218.80-47,907.18

Finding the Fourth Proportional to 77,431.68, 116,218.80 and 47,907.18

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Solution

The fourth proportional to 77,431.68, 116,218.80 and 47,907.18 is: 71,904.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,431.68 : 116,218.80 = 47,907.18 : x
  2. Step 2: Convert to fraction form
    77,431.68/116,218.80 = 47,907.18/x
  3. Step 3: Cross multiply
    77,431.68x = 116,218.80 × 47,907.18
  4. Step 4: Simplify right side
    77,431.68x = 5,567,714,970.98
  5. Step 5: Solve for x
    x = 5,567,714,970.98/77,431.68
  6. Step 6: Final answer
    x = 71,904.87

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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.