Home / 42,682.16-63,971.40-30,205.86

Finding the Fourth Proportional to 42,682.16, 63,971.40 and 30,205.86

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Solution

The fourth proportional to 42,682.16, 63,971.40 and 30,205.86 is: 45,272.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,682.16 : 63,971.40 = 30,205.86 : x
  2. Step 2: Convert to fraction form
    42,682.16/63,971.40 = 30,205.86/x
  3. Step 3: Cross multiply
    42,682.16x = 63,971.40 × 30,205.86
  4. Step 4: Simplify right side
    42,682.16x = 1,932,311,152.40
  5. Step 5: Solve for x
    x = 1,932,311,152.40/42,682.16
  6. Step 6: Final answer
    x = 45,272.10

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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.