Home / 84,607.08-126,921.51-28,422.96

Finding the Fourth Proportional to 84,607.08, 126,921.51 and 28,422.96

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Solution

The fourth proportional to 84,607.08, 126,921.51 and 28,422.96 is: 42,638.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,607.08 : 126,921.51 = 28,422.96 : x
  2. Step 2: Convert to fraction form
    84,607.08/126,921.51 = 28,422.96/x
  3. Step 3: Cross multiply
    84,607.08x = 126,921.51 × 28,422.96
  4. Step 4: Simplify right side
    84,607.08x = 3,607,485,001.87
  5. Step 5: Solve for x
    x = 3,607,485,001.87/84,607.08
  6. Step 6: Final answer
    x = 42,638.10

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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.