Home / 68,720,444.32-102,942,651.21-31,780,556.48

Finding the Fourth Proportional to 68,720,444.32, 102,942,651.21 and 31,780,556.48

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Solution

The fourth proportional to 68,720,444.32, 102,942,651.21 and 31,780,556.48 is: 47,607,007.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,720,444.32 : 102,942,651.21 = 31,780,556.48 : x
  2. Step 2: Convert to fraction form
    68,720,444.32/102,942,651.21 = 31,780,556.48/x
  3. Step 3: Cross multiply
    68,720,444.32x = 102,942,651.21 × 31,780,556.48
  4. Step 4: Simplify right side
    68,720,444.32x = 3,271,574,740,980,345
  5. Step 5: Solve for x
    x = 3,271,574,740,980,345/68,720,444.32
  6. Step 6: Final answer
    x = 47,607,007.98

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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.