Home / 81,274.50-121,911.76-53,370.80

Finding the Fourth Proportional to 81,274.50, 121,911.76 and 53,370.80

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Solution

The fourth proportional to 81,274.50, 121,911.76 and 53,370.80 is: 80,056.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,274.50 : 121,911.76 = 53,370.80 : x
  2. Step 2: Convert to fraction form
    81,274.50/121,911.76 = 53,370.80/x
  3. Step 3: Cross multiply
    81,274.50x = 121,911.76 × 53,370.80
  4. Step 4: Simplify right side
    81,274.50x = 6,506,528,160.61
  5. Step 5: Solve for x
    x = 6,506,528,160.61/81,274.50
  6. Step 6: Final answer
    x = 80,056.21

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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.