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Finding the Fourth Proportional to 86,958.84, 130,459.44 and 26,985.84

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Solution

The fourth proportional to 86,958.84, 130,459.44 and 26,985.84 is: 40,485.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,958.84 : 130,459.44 = 26,985.84 : x
  2. Step 2: Convert to fraction form
    86,958.84/130,459.44 = 26,985.84/x
  3. Step 3: Cross multiply
    86,958.84x = 130,459.44 × 26,985.84
  4. Step 4: Simplify right side
    86,958.84x = 3,520,557,574.33
  5. Step 5: Solve for x
    x = 3,520,557,574.33/86,958.84
  6. Step 6: Final answer
    x = 40,485.33

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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.