Home / 76,379.32-105,408.30-42,847.48

Finding the Fourth Proportional to 76,379.32, 105,408.30 and 42,847.48

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Solution

The fourth proportional to 76,379.32, 105,408.30 and 42,847.48 is: 59,132.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,379.32 : 105,408.30 = 42,847.48 : x
  2. Step 2: Convert to fraction form
    76,379.32/105,408.30 = 42,847.48/x
  3. Step 3: Cross multiply
    76,379.32x = 105,408.30 × 42,847.48
  4. Step 4: Simplify right side
    76,379.32x = 4,516,480,026.08
  5. Step 5: Solve for x
    x = 4,516,480,026.08/76,379.32
  6. Step 6: Final answer
    x = 59,132.24

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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.