Home / 81,146.40-111,981.76-45,336.56

Finding the Fourth Proportional to 81,146.40, 111,981.76 and 45,336.56

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Solution

The fourth proportional to 81,146.40, 111,981.76 and 45,336.56 is: 62,564.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,146.40 : 111,981.76 = 45,336.56 : x
  2. Step 2: Convert to fraction form
    81,146.40/111,981.76 = 45,336.56/x
  3. Step 3: Cross multiply
    81,146.40x = 111,981.76 × 45,336.56
  4. Step 4: Simplify right side
    81,146.40x = 5,076,867,781.15
  5. Step 5: Solve for x
    x = 5,076,867,781.15/81,146.40
  6. Step 6: Final answer
    x = 62,564.30

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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.