Home / 86,971.56-120,262.35-69,035.45

Finding the Fourth Proportional to 86,971.56, 120,262.35 and 69,035.45

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Solution

The fourth proportional to 86,971.56, 120,262.35 and 69,035.45 is: 95,460.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,971.56 : 120,262.35 = 69,035.45 : x
  2. Step 2: Convert to fraction form
    86,971.56/120,262.35 = 69,035.45/x
  3. Step 3: Cross multiply
    86,971.56x = 120,262.35 × 69,035.45
  4. Step 4: Simplify right side
    86,971.56x = 8,302,364,849.00
  5. Step 5: Solve for x
    x = 8,302,364,849.00/86,971.56
  6. Step 6: Final answer
    x = 95,460.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.