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Finding the Fourth Proportional to 79,492.40, 109,675.59 and 47,649.68

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Solution

The fourth proportional to 79,492.40, 109,675.59 and 47,649.68 is: 65,742.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,492.40 : 109,675.59 = 47,649.68 : x
  2. Step 2: Convert to fraction form
    79,492.40/109,675.59 = 47,649.68/x
  3. Step 3: Cross multiply
    79,492.40x = 109,675.59 × 47,649.68
  4. Step 4: Simplify right side
    79,492.40x = 5,226,006,767.31
  5. Step 5: Solve for x
    x = 5,226,006,767.31/79,492.40
  6. Step 6: Final answer
    x = 65,742.22

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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.