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Finding the Fourth Proportional to 72,013.48, 99,377.74 and 39,748.34

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Solution

The fourth proportional to 72,013.48, 99,377.74 and 39,748.34 is: 54,852.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,013.48 : 99,377.74 = 39,748.34 : x
  2. Step 2: Convert to fraction form
    72,013.48/99,377.74 = 39,748.34/x
  3. Step 3: Cross multiply
    72,013.48x = 99,377.74 × 39,748.34
  4. Step 4: Simplify right side
    72,013.48x = 3,950,100,197.95
  5. Step 5: Solve for x
    x = 3,950,100,197.95/72,013.48
  6. Step 6: Final answer
    x = 54,852.23

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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.