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Finding the Fourth Proportional to 75,556,977.60, 113,146,509.60 and 60,440,433.60

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Solution

The fourth proportional to 75,556,977.60, 113,146,509.60 and 60,440,433.60 is: 90,509,497.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,556,977.60 : 113,146,509.60 = 60,440,433.60 : x
  2. Step 2: Convert to fraction form
    75,556,977.60/113,146,509.60 = 60,440,433.60/x
  3. Step 3: Cross multiply
    75,556,977.60x = 113,146,509.60 × 60,440,433.60
  4. Step 4: Simplify right side
    75,556,977.60x = 6,838,624,100,550,562
  5. Step 5: Solve for x
    x = 6,838,624,100,550,562/75,556,977.60
  6. Step 6: Final answer
    x = 90,509,497.84

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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.