Home / 81,403.40-122,032.20-53,336.90

Finding the Fourth Proportional to 81,403.40, 122,032.20 and 53,336.90

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Solution

The fourth proportional to 81,403.40, 122,032.20 and 53,336.90 is: 79,957.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,403.40 : 122,032.20 = 53,336.90 : x
  2. Step 2: Convert to fraction form
    81,403.40/122,032.20 = 53,336.90/x
  3. Step 3: Cross multiply
    81,403.40x = 122,032.20 × 53,336.90
  4. Step 4: Simplify right side
    81,403.40x = 6,508,819,248.18
  5. Step 5: Solve for x
    x = 6,508,819,248.18/81,403.40
  6. Step 6: Final answer
    x = 79,957.58

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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.