Home / 90,130.72-124,389.24-49,853.92

Finding the Fourth Proportional to 90,130.72, 124,389.24 and 49,853.92

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Solution

The fourth proportional to 90,130.72, 124,389.24 and 49,853.92 is: 68,803.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,130.72 : 124,389.24 = 49,853.92 : x
  2. Step 2: Convert to fraction form
    90,130.72/124,389.24 = 49,853.92/x
  3. Step 3: Cross multiply
    90,130.72x = 124,389.24 × 49,853.92
  4. Step 4: Simplify right side
    90,130.72x = 6,201,291,219.82
  5. Step 5: Solve for x
    x = 6,201,291,219.82/90,130.72
  6. Step 6: Final answer
    x = 68,803.30

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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.