Home / 90,730.29-136,080.86-28,400.79

Finding the Fourth Proportional to 90,730.29, 136,080.86 and 28,400.79

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Solution

The fourth proportional to 90,730.29, 136,080.86 and 28,400.79 is: 42,596.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,730.29 : 136,080.86 = 28,400.79 : x
  2. Step 2: Convert to fraction form
    90,730.29/136,080.86 = 28,400.79/x
  3. Step 3: Cross multiply
    90,730.29x = 136,080.86 × 28,400.79
  4. Step 4: Simplify right side
    90,730.29x = 3,864,803,785.88
  5. Step 5: Solve for x
    x = 3,864,803,785.88/90,730.29
  6. Step 6: Final answer
    x = 42,596.62

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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.