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Finding the Fourth Proportional to 87,602.48, 120,749.40 and 68,448.76

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Solution

The fourth proportional to 87,602.48, 120,749.40 and 68,448.76 is: 94,348.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,602.48 : 120,749.40 = 68,448.76 : x
  2. Step 2: Convert to fraction form
    87,602.48/120,749.40 = 68,448.76/x
  3. Step 3: Cross multiply
    87,602.48x = 120,749.40 × 68,448.76
  4. Step 4: Simplify right side
    87,602.48x = 8,265,146,700.74
  5. Step 5: Solve for x
    x = 8,265,146,700.74/87,602.48
  6. Step 6: Final answer
    x = 94,348.32

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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.