Home / 90,145.45-124,389.80-49,853.72

Finding the Fourth Proportional to 90,145.45, 124,389.80 and 49,853.72

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Solution

The fourth proportional to 90,145.45, 124,389.80 and 49,853.72 is: 68,792.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,145.45 : 124,389.80 = 49,853.72 : x
  2. Step 2: Convert to fraction form
    90,145.45/124,389.80 = 49,853.72/x
  3. Step 3: Cross multiply
    90,145.45x = 124,389.80 × 49,853.72
  4. Step 4: Simplify right side
    90,145.45x = 6,201,294,321.76
  5. Step 5: Solve for x
    x = 6,201,294,321.76/90,145.45
  6. Step 6: Final answer
    x = 68,792.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.