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Finding the Fourth Proportional to 82,913.78, 114,421.56 and 45,188.12

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Solution

The fourth proportional to 82,913.78, 114,421.56 and 45,188.12 is: 62,359.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,913.78 : 114,421.56 = 45,188.12 : x
  2. Step 2: Convert to fraction form
    82,913.78/114,421.56 = 45,188.12/x
  3. Step 3: Cross multiply
    82,913.78x = 114,421.56 × 45,188.12
  4. Step 4: Simplify right side
    82,913.78x = 5,170,495,183.87
  5. Step 5: Solve for x
    x = 5,170,495,183.87/82,913.78
  6. Step 6: Final answer
    x = 62,359.90

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1.5x scale

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.