Home / 98,933.76-136,530.36-53,612.64

Finding the Fourth Proportional to 98,933.76, 136,530.36 and 53,612.64

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Solution

The fourth proportional to 98,933.76, 136,530.36 and 53,612.64 is: 73,986.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,933.76 : 136,530.36 = 53,612.64 : x
  2. Step 2: Convert to fraction form
    98,933.76/136,530.36 = 53,612.64/x
  3. Step 3: Cross multiply
    98,933.76x = 136,530.36 × 53,612.64
  4. Step 4: Simplify right side
    98,933.76x = 7,319,753,039.75
  5. Step 5: Solve for x
    x = 7,319,753,039.75/98,933.76
  6. Step 6: Final answer
    x = 73,986.40

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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.