Home / 7,142,487.85-9,856,661.31-3,879,356.95

Finding the Fourth Proportional to 7,142,487.85, 9,856,661.31 and 3,879,356.95

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Solution

The fourth proportional to 7,142,487.85, 9,856,661.31 and 3,879,356.95 is: 5,353,527.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142,487.85 : 9,856,661.31 = 3,879,356.95 : x
  2. Step 2: Convert to fraction form
    7,142,487.85/9,856,661.31 = 3,879,356.95/x
  3. Step 3: Cross multiply
    7,142,487.85x = 9,856,661.31 × 3,879,356.95
  4. Step 4: Simplify right side
    7,142,487.85x = 38,237,507,556,744.61
  5. Step 5: Solve for x
    x = 38,237,507,556,744.61/7,142,487.85
  6. Step 6: Final answer
    x = 5,353,527.84

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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.