Home / 86,807.20-130,216.56-31,396

Finding the Fourth Proportional to 86,807.20, 130,216.56 and 31,396

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Solution

The fourth proportional to 86,807.20, 130,216.56 and 31,396 is: 47,096.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,807.20 : 130,216.56 = 31,396 : x
  2. Step 2: Convert to fraction form
    86,807.20/130,216.56 = 31,396/x
  3. Step 3: Cross multiply
    86,807.20x = 130,216.56 × 31,396
  4. Step 4: Simplify right side
    86,807.20x = 4,088,279,117.76
  5. Step 5: Solve for x
    x = 4,088,279,117.76/86,807.20
  6. Step 6: Final answer
    x = 47,096.08

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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.