Home / 86,815.85-130,264.29-30,698.46

Finding the Fourth Proportional to 86,815.85, 130,264.29 and 30,698.46

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Solution

The fourth proportional to 86,815.85, 130,264.29 and 30,698.46 is: 46,062.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,815.85 : 130,264.29 = 30,698.46 : x
  2. Step 2: Convert to fraction form
    86,815.85/130,264.29 = 30,698.46/x
  3. Step 3: Cross multiply
    86,815.85x = 130,264.29 × 30,698.46
  4. Step 4: Simplify right side
    86,815.85x = 3,998,913,095.99
  5. Step 5: Solve for x
    x = 3,998,913,095.99/86,815.85
  6. Step 6: Final answer
    x = 46,062.02

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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.