Home / 91,145.16-125,789.40-55,332.36

Finding the Fourth Proportional to 91,145.16, 125,789.40 and 55,332.36

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Solution

The fourth proportional to 91,145.16, 125,789.40 and 55,332.36 is: 76,364.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,145.16 : 125,789.40 = 55,332.36 : x
  2. Step 2: Convert to fraction form
    91,145.16/125,789.40 = 55,332.36/x
  3. Step 3: Cross multiply
    91,145.16x = 125,789.40 × 55,332.36
  4. Step 4: Simplify right side
    91,145.16x = 6,960,224,364.98
  5. Step 5: Solve for x
    x = 6,960,224,364.98/91,145.16
  6. Step 6: Final answer
    x = 76,364.17

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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.