Home / 79,985.50-110,415.22-47,731.30

Finding the Fourth Proportional to 79,985.50, 110,415.22 and 47,731.30

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Solution

The fourth proportional to 79,985.50, 110,415.22 and 47,731.30 is: 65,890.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,985.50 : 110,415.22 = 47,731.30 : x
  2. Step 2: Convert to fraction form
    79,985.50/110,415.22 = 47,731.30/x
  3. Step 3: Cross multiply
    79,985.50x = 110,415.22 × 47,731.30
  4. Step 4: Simplify right side
    79,985.50x = 5,270,261,595.02
  5. Step 5: Solve for x
    x = 5,270,261,595.02/79,985.50
  6. Step 6: Final answer
    x = 65,890.21

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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.