Home / 86,619,721.12-129,945,968.52-34,808,357.05

Finding the Fourth Proportional to 86,619,721.12, 129,945,968.52 and 34,808,357.05

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Solution

The fourth proportional to 86,619,721.12, 129,945,968.52 and 34,808,357.05 is: 52,219,120.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,619,721.12 : 129,945,968.52 = 34,808,357.05 : x
  2. Step 2: Convert to fraction form
    86,619,721.12/129,945,968.52 = 34,808,357.05/x
  3. Step 3: Cross multiply
    86,619,721.12x = 129,945,968.52 × 34,808,357.05
  4. Step 4: Simplify right side
    86,619,721.12x = 4,523,205,669,452,220
  5. Step 5: Solve for x
    x = 4,523,205,669,452,220/86,619,721.12
  6. Step 6: Final answer
    x = 52,219,120.67

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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.