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Finding the Fourth Proportional to 86,300.39, 129,468.23 and 36,380.49

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Solution

The fourth proportional to 86,300.39, 129,468.23 and 36,380.49 is: 54,578.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,300.39 : 129,468.23 = 36,380.49 : x
  2. Step 2: Convert to fraction form
    86,300.39/129,468.23 = 36,380.49/x
  3. Step 3: Cross multiply
    86,300.39x = 129,468.23 × 36,380.49
  4. Step 4: Simplify right side
    86,300.39x = 4,710,117,464.93
  5. Step 5: Solve for x
    x = 4,710,117,464.93/86,300.39
  6. Step 6: Final answer
    x = 54,578.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.