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Finding the Fourth Proportional to 86,843.40, 130,265.10 and 36,906.90

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Solution

The fourth proportional to 86,843.40, 130,265.10 and 36,906.90 is: 55,360.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,843.40 : 130,265.10 = 36,906.90 : x
  2. Step 2: Convert to fraction form
    86,843.40/130,265.10 = 36,906.90/x
  3. Step 3: Cross multiply
    86,843.40x = 130,265.10 × 36,906.90
  4. Step 4: Simplify right side
    86,843.40x = 4,807,681,019.19
  5. Step 5: Solve for x
    x = 4,807,681,019.19/86,843.40
  6. Step 6: Final answer
    x = 55,360.35

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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.