Home / 61,108.72-91,686.36-31,507.68

Finding the Fourth Proportional to 61,108.72, 91,686.36 and 31,507.68

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Solution

The fourth proportional to 61,108.72, 91,686.36 and 31,507.68 is: 47,273.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,108.72 : 91,686.36 = 31,507.68 : x
  2. Step 2: Convert to fraction form
    61,108.72/91,686.36 = 31,507.68/x
  3. Step 3: Cross multiply
    61,108.72x = 91,686.36 × 31,507.68
  4. Step 4: Simplify right side
    61,108.72x = 2,888,824,491.24
  5. Step 5: Solve for x
    x = 2,888,824,491.24/61,108.72
  6. Step 6: Final answer
    x = 47,273.52

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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.