Home / 47,089.45-70,633.21-13,808.78

Finding the Fourth Proportional to 47,089.45, 70,633.21 and 13,808.78

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Solution

The fourth proportional to 47,089.45, 70,633.21 and 13,808.78 is: 20,712.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,089.45 : 70,633.21 = 13,808.78 : x
  2. Step 2: Convert to fraction form
    47,089.45/70,633.21 = 13,808.78/x
  3. Step 3: Cross multiply
    47,089.45x = 70,633.21 × 13,808.78
  4. Step 4: Simplify right side
    47,089.45x = 975,358,457.58
  5. Step 5: Solve for x
    x = 975,358,457.58/47,089.45
  6. Step 6: Final answer
    x = 20,712.89

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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.