Home / 81,024.60-121,536.90-49,531.80

Finding the Fourth Proportional to 81,024.60, 121,536.90 and 49,531.80

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Solution

The fourth proportional to 81,024.60, 121,536.90 and 49,531.80 is: 74,297.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,024.60 : 121,536.90 = 49,531.80 : x
  2. Step 2: Convert to fraction form
    81,024.60/121,536.90 = 49,531.80/x
  3. Step 3: Cross multiply
    81,024.60x = 121,536.90 × 49,531.80
  4. Step 4: Simplify right side
    81,024.60x = 6,019,941,423.42
  5. Step 5: Solve for x
    x = 6,019,941,423.42/81,024.60
  6. Step 6: Final answer
    x = 74,297.70

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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.