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Finding the Fourth Proportional to 86,805.92, 130,219.14 and 30,634.32

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Solution

The fourth proportional to 86,805.92, 130,219.14 and 30,634.32 is: 45,955.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,805.92 : 130,219.14 = 30,634.32 : x
  2. Step 2: Convert to fraction form
    86,805.92/130,219.14 = 30,634.32/x
  3. Step 3: Cross multiply
    86,805.92x = 130,219.14 × 30,634.32
  4. Step 4: Simplify right side
    86,805.92x = 3,989,174,804.88
  5. Step 5: Solve for x
    x = 3,989,174,804.88/86,805.92
  6. Step 6: Final answer
    x = 45,955.10

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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.