Home / 81,655.29-112,720.01-47,650.85

Finding the Fourth Proportional to 81,655.29, 112,720.01 and 47,650.85

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Solution

The fourth proportional to 81,655.29, 112,720.01 and 47,650.85 is: 65,779.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,655.29 : 112,720.01 = 47,650.85 : x
  2. Step 2: Convert to fraction form
    81,655.29/112,720.01 = 47,650.85/x
  3. Step 3: Cross multiply
    81,655.29x = 112,720.01 × 47,650.85
  4. Step 4: Simplify right side
    81,655.29x = 5,371,203,909.35
  5. Step 5: Solve for x
    x = 5,371,203,909.35/81,655.29
  6. Step 6: Final answer
    x = 65,779.01

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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.