Home / 86,778.35-130,188.29-30,631.06

Finding the Fourth Proportional to 86,778.35, 130,188.29 and 30,631.06

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Solution

The fourth proportional to 86,778.35, 130,188.29 and 30,631.06 is: 45,953.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,778.35 : 130,188.29 = 30,631.06 : x
  2. Step 2: Convert to fraction form
    86,778.35/130,188.29 = 30,631.06/x
  3. Step 3: Cross multiply
    86,778.35x = 130,188.29 × 30,631.06
  4. Step 4: Simplify right side
    86,778.35x = 3,987,804,843.66
  5. Step 5: Solve for x
    x = 3,987,804,843.66/86,778.35
  6. Step 6: Final answer
    x = 45,953.92

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1.5x scale

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.