Home / 80,548.76-111,118.72-56,688.68

Finding the Fourth Proportional to 80,548.76, 111,118.72 and 56,688.68

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Solution

The fourth proportional to 80,548.76, 111,118.72 and 56,688.68 is: 78,203.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,548.76 : 111,118.72 = 56,688.68 : x
  2. Step 2: Convert to fraction form
    80,548.76/111,118.72 = 56,688.68/x
  3. Step 3: Cross multiply
    80,548.76x = 111,118.72 × 56,688.68
  4. Step 4: Simplify right side
    80,548.76x = 6,299,173,560.09
  5. Step 5: Solve for x
    x = 6,299,173,560.09/80,548.76
  6. Step 6: Final answer
    x = 78,203.23

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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.