Home / 60,720.32-91,062.72-21,270.08

Finding the Fourth Proportional to 60,720.32, 91,062.72 and 21,270.08

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Solution

The fourth proportional to 60,720.32, 91,062.72 and 21,270.08 is: 31,898.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,720.32 : 91,062.72 = 21,270.08 : x
  2. Step 2: Convert to fraction form
    60,720.32/91,062.72 = 21,270.08/x
  3. Step 3: Cross multiply
    60,720.32x = 91,062.72 × 21,270.08
  4. Step 4: Simplify right side
    60,720.32x = 1,936,911,339.42
  5. Step 5: Solve for x
    x = 1,936,911,339.42/60,720.32
  6. Step 6: Final answer
    x = 31,898.90

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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.