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Finding the Fourth Proportional to 72,673.88, 100,248.92 and 45,770.16

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Solution

The fourth proportional to 72,673.88, 100,248.92 and 45,770.16 is: 63,136.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,673.88 : 100,248.92 = 45,770.16 : x
  2. Step 2: Convert to fraction form
    72,673.88/100,248.92 = 45,770.16/x
  3. Step 3: Cross multiply
    72,673.88x = 100,248.92 × 45,770.16
  4. Step 4: Simplify right side
    72,673.88x = 4,588,409,108.23
  5. Step 5: Solve for x
    x = 4,588,409,108.23/72,673.88
  6. Step 6: Final answer
    x = 63,136.98

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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.