Home / 77,213.84-115,595.40-47,542.64

Finding the Fourth Proportional to 77,213.84, 115,595.40 and 47,542.64

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Solution

The fourth proportional to 77,213.84, 115,595.40 and 47,542.64 is: 71,175.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,213.84 : 115,595.40 = 47,542.64 : x
  2. Step 2: Convert to fraction form
    77,213.84/115,595.40 = 47,542.64/x
  3. Step 3: Cross multiply
    77,213.84x = 115,595.40 × 47,542.64
  4. Step 4: Simplify right side
    77,213.84x = 5,495,710,487.86
  5. Step 5: Solve for x
    x = 5,495,710,487.86/77,213.84
  6. Step 6: Final answer
    x = 71,175.20

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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.