Home / 80,655.60-111,262.08-47,931.48

Finding the Fourth Proportional to 80,655.60, 111,262.08 and 47,931.48

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Solution

The fourth proportional to 80,655.60, 111,262.08 and 47,931.48 is: 66,120.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,655.60 : 111,262.08 = 47,931.48 : x
  2. Step 2: Convert to fraction form
    80,655.60/111,262.08 = 47,931.48/x
  3. Step 3: Cross multiply
    80,655.60x = 111,262.08 × 47,931.48
  4. Step 4: Simplify right side
    80,655.60x = 5,332,956,162.28
  5. Step 5: Solve for x
    x = 5,332,956,162.28/80,655.60
  6. Step 6: Final answer
    x = 66,120.10

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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.