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Finding the Fourth Proportional to 79,987.50, 110,382.75 and 48,157.74

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Solution

The fourth proportional to 79,987.50, 110,382.75 and 48,157.74 is: 66,457.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,987.50 : 110,382.75 = 48,157.74 : x
  2. Step 2: Convert to fraction form
    79,987.50/110,382.75 = 48,157.74/x
  3. Step 3: Cross multiply
    79,987.50x = 110,382.75 × 48,157.74
  4. Step 4: Simplify right side
    79,987.50x = 5,315,783,774.99
  5. Step 5: Solve for x
    x = 5,315,783,774.99/79,987.50
  6. Step 6: Final answer
    x = 66,457.68

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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.