Home / 91,031.04-136,371.60-51,470.64

Finding the Fourth Proportional to 91,031.04, 136,371.60 and 51,470.64

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Solution

The fourth proportional to 91,031.04, 136,371.60 and 51,470.64 is: 77,107.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,031.04 : 136,371.60 = 51,470.64 : x
  2. Step 2: Convert to fraction form
    91,031.04/136,371.60 = 51,470.64/x
  3. Step 3: Cross multiply
    91,031.04x = 136,371.60 × 51,470.64
  4. Step 4: Simplify right side
    91,031.04x = 7,019,133,529.82
  5. Step 5: Solve for x
    x = 7,019,133,529.82/91,031.04
  6. Step 6: Final answer
    x = 77,107.03

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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.