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Finding the Fourth Proportional to 79,297.98, 109,421.13 and 45,308.67

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Solution

The fourth proportional to 79,297.98, 109,421.13 and 45,308.67 is: 62,520.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,297.98 : 109,421.13 = 45,308.67 : x
  2. Step 2: Convert to fraction form
    79,297.98/109,421.13 = 45,308.67/x
  3. Step 3: Cross multiply
    79,297.98x = 109,421.13 × 45,308.67
  4. Step 4: Simplify right side
    79,297.98x = 4,957,725,870.20
  5. Step 5: Solve for x
    x = 4,957,725,870.20/79,297.98
  6. Step 6: Final answer
    x = 62,520.20

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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.