Home / 86,991,240.92-120,066,178.74-55,180,835.24

Finding the Fourth Proportional to 86,991,240.92, 120,066,178.74 and 55,180,835.24

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Solution

The fourth proportional to 86,991,240.92, 120,066,178.74 and 55,180,835.24 is: 76,161,139.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,991,240.92 : 120,066,178.74 = 55,180,835.24 : x
  2. Step 2: Convert to fraction form
    86,991,240.92/120,066,178.74 = 55,180,835.24/x
  3. Step 3: Cross multiply
    86,991,240.92x = 120,066,178.74 × 55,180,835.24
  4. Step 4: Simplify right side
    86,991,240.92x = 6,625,352,026,948,331
  5. Step 5: Solve for x
    x = 6,625,352,026,948,331/86,991,240.92
  6. Step 6: Final answer
    x = 76,161,139.41

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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.