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Finding the Fourth Proportional to 72,497.48, 100,243.86 and 63,166.28

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Solution

The fourth proportional to 72,497.48, 100,243.86 and 63,166.28 is: 87,341.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,497.48 : 100,243.86 = 63,166.28 : x
  2. Step 2: Convert to fraction form
    72,497.48/100,243.86 = 63,166.28/x
  3. Step 3: Cross multiply
    72,497.48x = 100,243.86 × 63,166.28
  4. Step 4: Simplify right side
    72,497.48x = 6,332,031,729.04
  5. Step 5: Solve for x
    x = 6,332,031,729.04/72,497.48
  6. Step 6: Final answer
    x = 87,341.40

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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.