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Finding the Fourth Proportional to 81,502.80, 122,254.20 and 34,760.40

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Solution

The fourth proportional to 81,502.80, 122,254.20 and 34,760.40 is: 52,140.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,502.80 : 122,254.20 = 34,760.40 : x
  2. Step 2: Convert to fraction form
    81,502.80/122,254.20 = 34,760.40/x
  3. Step 3: Cross multiply
    81,502.80x = 122,254.20 × 34,760.40
  4. Step 4: Simplify right side
    81,502.80x = 4,249,604,893.68
  5. Step 5: Solve for x
    x = 4,249,604,893.68/81,502.80
  6. Step 6: Final answer
    x = 52,140.60

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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.