Home / 90,784.97-136,199.32-28,455.47

Finding the Fourth Proportional to 90,784.97, 136,199.32 and 28,455.47

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Solution

The fourth proportional to 90,784.97, 136,199.32 and 28,455.47 is: 42,690.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,784.97 : 136,199.32 = 28,455.47 : x
  2. Step 2: Convert to fraction form
    90,784.97/136,199.32 = 28,455.47/x
  3. Step 3: Cross multiply
    90,784.97x = 136,199.32 × 28,455.47
  4. Step 4: Simplify right side
    90,784.97x = 3,875,615,582.95
  5. Step 5: Solve for x
    x = 3,875,615,582.95/90,784.97
  6. Step 6: Final answer
    x = 42,690.06

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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.