Home / 81,663.36-112,704.47-47,680.20

Finding the Fourth Proportional to 81,663.36, 112,704.47 and 47,680.20

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Solution

The fourth proportional to 81,663.36, 112,704.47 and 47,680.20 is: 65,803.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,663.36 : 112,704.47 = 47,680.20 : x
  2. Step 2: Convert to fraction form
    81,663.36/112,704.47 = 47,680.20/x
  3. Step 3: Cross multiply
    81,663.36x = 112,704.47 × 47,680.20
  4. Step 4: Simplify right side
    81,663.36x = 5,373,771,670.49
  5. Step 5: Solve for x
    x = 5,373,771,670.49/81,663.36
  6. Step 6: Final answer
    x = 65,803.95

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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.