Home / 80,905.68-121,358.41-21,741.35

Finding the Fourth Proportional to 80,905.68, 121,358.41 and 21,741.35

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Solution

The fourth proportional to 80,905.68, 121,358.41 and 21,741.35 is: 32,612.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,905.68 : 121,358.41 = 21,741.35 : x
  2. Step 2: Convert to fraction form
    80,905.68/121,358.41 = 21,741.35/x
  3. Step 3: Cross multiply
    80,905.68x = 121,358.41 × 21,741.35
  4. Step 4: Simplify right side
    80,905.68x = 2,638,495,667.25
  5. Step 5: Solve for x
    x = 2,638,495,667.25/80,905.68
  6. Step 6: Final answer
    x = 32,612.00

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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.