Home / 79,421.20-109,588.26-45,424.21

Finding the Fourth Proportional to 79,421.20, 109,588.26 and 45,424.21

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Solution

The fourth proportional to 79,421.20, 109,588.26 and 45,424.21 is: 62,677.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,421.20 : 109,588.26 = 45,424.21 : x
  2. Step 2: Convert to fraction form
    79,421.20/109,588.26 = 45,424.21/x
  3. Step 3: Cross multiply
    79,421.20x = 109,588.26 × 45,424.21
  4. Step 4: Simplify right side
    79,421.20x = 4,977,960,135.77
  5. Step 5: Solve for x
    x = 4,977,960,135.77/79,421.20
  6. Step 6: Final answer
    x = 62,677.98

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1.5x scale

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.