Home / 90,389.10-135,590.58-30,417.87

Finding the Fourth Proportional to 90,389.10, 135,590.58 and 30,417.87

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Solution

The fourth proportional to 90,389.10, 135,590.58 and 30,417.87 is: 45,629.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,389.10 : 135,590.58 = 30,417.87 : x
  2. Step 2: Convert to fraction form
    90,389.10/135,590.58 = 30,417.87/x
  3. Step 3: Cross multiply
    90,389.10x = 135,590.58 × 30,417.87
  4. Step 4: Simplify right side
    90,389.10x = 4,124,376,635.66
  5. Step 5: Solve for x
    x = 4,124,376,635.66/90,389.10
  6. Step 6: Final answer
    x = 45,629.14

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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.