Home / 90,911.97-136,389.41-28,582.47

Finding the Fourth Proportional to 90,911.97, 136,389.41 and 28,582.47

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Solution

The fourth proportional to 90,911.97, 136,389.41 and 28,582.47 is: 42,880.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,911.97 : 136,389.41 = 28,582.47 : x
  2. Step 2: Convert to fraction form
    90,911.97/136,389.41 = 28,582.47/x
  3. Step 3: Cross multiply
    90,911.97x = 136,389.41 × 28,582.47
  4. Step 4: Simplify right side
    90,911.97x = 3,898,345,779.64
  5. Step 5: Solve for x
    x = 3,898,345,779.64/90,911.97
  6. Step 6: Final answer
    x = 42,880.45

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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.