Home / 79,688.28-109,968.60-47,445.40

Finding the Fourth Proportional to 79,688.28, 109,968.60 and 47,445.40

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Solution

The fourth proportional to 79,688.28, 109,968.60 and 47,445.40 is: 65,473.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,688.28 : 109,968.60 = 47,445.40 : x
  2. Step 2: Convert to fraction form
    79,688.28/109,968.60 = 47,445.40/x
  3. Step 3: Cross multiply
    79,688.28x = 109,968.60 × 47,445.40
  4. Step 4: Simplify right side
    79,688.28x = 5,217,504,214.44
  5. Step 5: Solve for x
    x = 5,217,504,214.44/79,688.28
  6. Step 6: Final answer
    x = 65,473.92

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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.