Home / 86,991.74-130,455.59-30,051.15

Finding the Fourth Proportional to 86,991.74, 130,455.59 and 30,051.15

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Solution

The fourth proportional to 86,991.74, 130,455.59 and 30,051.15 is: 45,065.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,991.74 : 130,455.59 = 30,051.15 : x
  2. Step 2: Convert to fraction form
    86,991.74/130,455.59 = 30,051.15/x
  3. Step 3: Cross multiply
    86,991.74x = 130,455.59 × 30,051.15
  4. Step 4: Simplify right side
    86,991.74x = 3,920,341,067.76
  5. Step 5: Solve for x
    x = 3,920,341,067.76/86,991.74
  6. Step 6: Final answer
    x = 45,065.67

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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.