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Finding the Fourth Proportional to 79,310.25, 109,457.87 and 45,776.25

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Solution

The fourth proportional to 79,310.25, 109,457.87 and 45,776.25 is: 63,176.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,310.25 : 109,457.87 = 45,776.25 : x
  2. Step 2: Convert to fraction form
    79,310.25/109,457.87 = 45,776.25/x
  3. Step 3: Cross multiply
    79,310.25x = 109,457.87 × 45,776.25
  4. Step 4: Simplify right side
    79,310.25x = 5,010,570,592.71
  5. Step 5: Solve for x
    x = 5,010,570,592.71/79,310.25
  6. Step 6: Final answer
    x = 63,176.84

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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.