Home / 81,050.40-111,853.64-45,240.71

Finding the Fourth Proportional to 81,050.40, 111,853.64 and 45,240.71

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Solution

The fourth proportional to 81,050.40, 111,853.64 and 45,240.71 is: 62,434.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,050.40 : 111,853.64 = 45,240.71 : x
  2. Step 2: Convert to fraction form
    81,050.40/111,853.64 = 45,240.71/x
  3. Step 3: Cross multiply
    81,050.40x = 111,853.64 × 45,240.71
  4. Step 4: Simplify right side
    81,050.40x = 5,060,337,643.52
  5. Step 5: Solve for x
    x = 5,060,337,643.52/81,050.40
  6. Step 6: Final answer
    x = 62,434.46

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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.