Home / 86,983.50-130,438.34-30,837.74

Finding the Fourth Proportional to 86,983.50, 130,438.34 and 30,837.74

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Solution

The fourth proportional to 86,983.50, 130,438.34 and 30,837.74 is: 46,243.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,983.50 : 130,438.34 = 30,837.74 : x
  2. Step 2: Convert to fraction form
    86,983.50/130,438.34 = 30,837.74/x
  3. Step 3: Cross multiply
    86,983.50x = 130,438.34 × 30,837.74
  4. Step 4: Simplify right side
    86,983.50x = 4,022,423,614.95
  5. Step 5: Solve for x
    x = 4,022,423,614.95/86,983.50
  6. Step 6: Final answer
    x = 46,243.52

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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.