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Finding the Fourth Proportional to 79,587.60, 109,832.76 and 43,779.60

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Solution

The fourth proportional to 79,587.60, 109,832.76 and 43,779.60 is: 60,416.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,587.60 : 109,832.76 = 43,779.60 : x
  2. Step 2: Convert to fraction form
    79,587.60/109,832.76 = 43,779.60/x
  3. Step 3: Cross multiply
    79,587.60x = 109,832.76 × 43,779.60
  4. Step 4: Simplify right side
    79,587.60x = 4,808,434,299.70
  5. Step 5: Solve for x
    x = 4,808,434,299.70/79,587.60
  6. Step 6: Final answer
    x = 60,416.88

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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.