Home / 103,421.72-154,989.05-47,124.24

Finding the Fourth Proportional to 103,421.72, 154,989.05 and 47,124.24

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Solution

The fourth proportional to 103,421.72, 154,989.05 and 47,124.24 is: 70,620.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,421.72 : 154,989.05 = 47,124.24 : x
  2. Step 2: Convert to fraction form
    103,421.72/154,989.05 = 47,124.24/x
  3. Step 3: Cross multiply
    103,421.72x = 154,989.05 × 47,124.24
  4. Step 4: Simplify right side
    103,421.72x = 7,303,740,953.95
  5. Step 5: Solve for x
    x = 7,303,740,953.95/103,421.72
  6. Step 6: Final answer
    x = 70,620.96

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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.