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Finding the Fourth Proportional to 72,740.88, 100,358.28 and 59,289

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Solution

The fourth proportional to 72,740.88, 100,358.28 and 59,289 is: 81,799.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,740.88 : 100,358.28 = 59,289 : x
  2. Step 2: Convert to fraction form
    72,740.88/100,358.28 = 59,289/x
  3. Step 3: Cross multiply
    72,740.88x = 100,358.28 × 59,289
  4. Step 4: Simplify right side
    72,740.88x = 5,950,142,062.92
  5. Step 5: Solve for x
    x = 5,950,142,062.92/72,740.88
  6. Step 6: Final answer
    x = 81,799.15

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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.