Home / 77,345.41-115,985.31-27,438.07

Finding the Fourth Proportional to 77,345.41, 115,985.31 and 27,438.07

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Solution

The fourth proportional to 77,345.41, 115,985.31 and 27,438.07 is: 41,145.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,345.41 : 115,985.31 = 27,438.07 : x
  2. Step 2: Convert to fraction form
    77,345.41/115,985.31 = 27,438.07/x
  3. Step 3: Cross multiply
    77,345.41x = 115,985.31 × 27,438.07
  4. Step 4: Simplify right side
    77,345.41x = 3,182,412,627.60
  5. Step 5: Solve for x
    x = 3,182,412,627.60/77,345.41
  6. Step 6: Final answer
    x = 41,145.46

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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.