Home / 115,835.08-159,855.78-65,533

Finding the Fourth Proportional to 115,835.08, 159,855.78 and 65,533

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Solution

The fourth proportional to 115,835.08, 159,855.78 and 65,533 is: 90,437.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,835.08 : 159,855.78 = 65,533 : x
  2. Step 2: Convert to fraction form
    115,835.08/159,855.78 = 65,533/x
  3. Step 3: Cross multiply
    115,835.08x = 159,855.78 × 65,533
  4. Step 4: Simplify right side
    115,835.08x = 10,475,828,830.74
  5. Step 5: Solve for x
    x = 10,475,828,830.74/115,835.08
  6. Step 6: Final answer
    x = 90,437.45

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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.