Home / 71,985.63-107,822.64-52,220.64

Finding the Fourth Proportional to 71,985.63, 107,822.64 and 52,220.64

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Solution

The fourth proportional to 71,985.63, 107,822.64 and 52,220.64 is: 78,217.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,985.63 : 107,822.64 = 52,220.64 : x
  2. Step 2: Convert to fraction form
    71,985.63/107,822.64 = 52,220.64/x
  3. Step 3: Cross multiply
    71,985.63x = 107,822.64 × 52,220.64
  4. Step 4: Simplify right side
    71,985.63x = 5,630,567,267.29
  5. Step 5: Solve for x
    x = 5,630,567,267.29/71,985.63
  6. Step 6: Final answer
    x = 78,217.93

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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.