Home / 76,071.28-114,106.52-20,667.28

Finding the Fourth Proportional to 76,071.28, 114,106.52 and 20,667.28

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Solution

The fourth proportional to 76,071.28, 114,106.52 and 20,667.28 is: 31,000.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,071.28 : 114,106.52 = 20,667.28 : x
  2. Step 2: Convert to fraction form
    76,071.28/114,106.52 = 20,667.28/x
  3. Step 3: Cross multiply
    76,071.28x = 114,106.52 × 20,667.28
  4. Step 4: Simplify right side
    76,071.28x = 2,358,271,398.67
  5. Step 5: Solve for x
    x = 2,358,271,398.67/76,071.28
  6. Step 6: Final answer
    x = 31,000.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.