Home / 76,455.44-105,491.36-42,919.28

Finding the Fourth Proportional to 76,455.44, 105,491.36 and 42,919.28

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Solution

The fourth proportional to 76,455.44, 105,491.36 and 42,919.28 is: 59,218.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,455.44 : 105,491.36 = 42,919.28 : x
  2. Step 2: Convert to fraction form
    76,455.44/105,491.36 = 42,919.28/x
  3. Step 3: Cross multiply
    76,455.44x = 105,491.36 × 42,919.28
  4. Step 4: Simplify right side
    76,455.44x = 4,527,613,217.42
  5. Step 5: Solve for x
    x = 4,527,613,217.42/76,455.44
  6. Step 6: Final answer
    x = 59,218.98

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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.