Home / 78,199.02-117,298.50-31,440.96

Finding the Fourth Proportional to 78,199.02, 117,298.50 and 31,440.96

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Solution

The fourth proportional to 78,199.02, 117,298.50 and 31,440.96 is: 47,161.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,199.02 : 117,298.50 = 31,440.96 : x
  2. Step 2: Convert to fraction form
    78,199.02/117,298.50 = 31,440.96/x
  3. Step 3: Cross multiply
    78,199.02x = 117,298.50 × 31,440.96
  4. Step 4: Simplify right side
    78,199.02x = 3,687,977,446.56
  5. Step 5: Solve for x
    x = 3,687,977,446.56/78,199.02
  6. Step 6: Final answer
    x = 47,161.43

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1.5x scale

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.