Home / 58,789.14-81,129-31,931.70

Finding the Fourth Proportional to 58,789.14, 81,129 and 31,931.70

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Solution

The fourth proportional to 58,789.14, 81,129 and 31,931.70 is: 44,065.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,789.14 : 81,129 = 31,931.70 : x
  2. Step 2: Convert to fraction form
    58,789.14/81,129 = 31,931.70/x
  3. Step 3: Cross multiply
    58,789.14x = 81,129 × 31,931.70
  4. Step 4: Simplify right side
    58,789.14x = 2,590,586,889.30
  5. Step 5: Solve for x
    x = 2,590,586,889.30/58,789.14
  6. Step 6: Final answer
    x = 44,065.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.