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Finding the Fourth Proportional to 79,322.49, 109,459.35 and 47,479.77

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Solution

The fourth proportional to 79,322.49, 109,459.35 and 47,479.77 is: 65,518.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,322.49 : 109,459.35 = 47,479.77 : x
  2. Step 2: Convert to fraction form
    79,322.49/109,459.35 = 47,479.77/x
  3. Step 3: Cross multiply
    79,322.49x = 109,459.35 × 47,479.77
  4. Step 4: Simplify right side
    79,322.49x = 5,197,104,762.35
  5. Step 5: Solve for x
    x = 5,197,104,762.35/79,322.49
  6. Step 6: Final answer
    x = 65,518.68

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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.