Home / 99,679.63-137,561.21-54,360.08

Finding the Fourth Proportional to 99,679.63, 137,561.21 and 54,360.08

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Solution

The fourth proportional to 99,679.63, 137,561.21 and 54,360.08 is: 75,018.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,679.63 : 137,561.21 = 54,360.08 : x
  2. Step 2: Convert to fraction form
    99,679.63/137,561.21 = 54,360.08/x
  3. Step 3: Cross multiply
    99,679.63x = 137,561.21 × 54,360.08
  4. Step 4: Simplify right side
    99,679.63x = 7,477,838,452.60
  5. Step 5: Solve for x
    x = 7,477,838,452.60/99,679.63
  6. Step 6: Final answer
    x = 75,018.72

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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.