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Finding the Fourth Proportional to 86,873.60, 130,284.40 and 45,297.92

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Solution

The fourth proportional to 86,873.60, 130,284.40 and 45,297.92 is: 67,933.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,873.60 : 130,284.40 = 45,297.92 : x
  2. Step 2: Convert to fraction form
    86,873.60/130,284.40 = 45,297.92/x
  3. Step 3: Cross multiply
    86,873.60x = 130,284.40 × 45,297.92
  4. Step 4: Simplify right side
    86,873.60x = 5,901,612,328.45
  5. Step 5: Solve for x
    x = 5,901,612,328.45/86,873.60
  6. Step 6: Final answer
    x = 67,933.32

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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.