Home / 81,656.30-122,519.16-39,567.72

Finding the Fourth Proportional to 81,656.30, 122,519.16 and 39,567.72

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Solution

The fourth proportional to 81,656.30, 122,519.16 and 39,567.72 is: 59,368.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,656.30 : 122,519.16 = 39,567.72 : x
  2. Step 2: Convert to fraction form
    81,656.30/122,519.16 = 39,567.72/x
  3. Step 3: Cross multiply
    81,656.30x = 122,519.16 × 39,567.72
  4. Step 4: Simplify right side
    81,656.30x = 4,847,803,817.52
  5. Step 5: Solve for x
    x = 4,847,803,817.52/81,656.30
  6. Step 6: Final answer
    x = 59,368.40

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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.