Home / 85,811.52-128,717.40-35,864.28

Finding the Fourth Proportional to 85,811.52, 128,717.40 and 35,864.28

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Solution

The fourth proportional to 85,811.52, 128,717.40 and 35,864.28 is: 53,796.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,811.52 : 128,717.40 = 35,864.28 : x
  2. Step 2: Convert to fraction form
    85,811.52/128,717.40 = 35,864.28/x
  3. Step 3: Cross multiply
    85,811.52x = 128,717.40 × 35,864.28
  4. Step 4: Simplify right side
    85,811.52x = 4,616,356,874.47
  5. Step 5: Solve for x
    x = 4,616,356,874.47/85,811.52
  6. Step 6: Final answer
    x = 53,796.47

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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.