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Finding the Fourth Proportional to 86,079,600.45, 129,119,400.68 and 86,079,600.45

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Solution

The fourth proportional to 86,079,600.45, 129,119,400.68 and 86,079,600.45 is: 129,119,400.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,079,600.45 : 129,119,400.68 = 86,079,600.45 : x
  2. Step 2: Convert to fraction form
    86,079,600.45/129,119,400.68 = 86,079,600.45/x
  3. Step 3: Cross multiply
    86,079,600.45x = 129,119,400.68 × 86,079,600.45
  4. Step 4: Simplify right side
    86,079,600.45x = 11,114,546,420,447,460
  5. Step 5: Solve for x
    x = 11,114,546,420,447,460/86,079,600.45
  6. Step 6: Final answer
    x = 129,119,400.68

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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.