Home / 86,935.85-130,403.78-51,360.65

Finding the Fourth Proportional to 86,935.85, 130,403.78 and 51,360.65

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Solution

The fourth proportional to 86,935.85, 130,403.78 and 51,360.65 is: 77,040.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,935.85 : 130,403.78 = 51,360.65 : x
  2. Step 2: Convert to fraction form
    86,935.85/130,403.78 = 51,360.65/x
  3. Step 3: Cross multiply
    86,935.85x = 130,403.78 × 51,360.65
  4. Step 4: Simplify right side
    86,935.85x = 6,697,622,646.45
  5. Step 5: Solve for x
    x = 6,697,622,646.45/86,935.85
  6. Step 6: Final answer
    x = 77,040.98

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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.