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Finding the Fourth Proportional to 82,408.94, 113,520.77 and 70,269.90

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Solution

The fourth proportional to 82,408.94, 113,520.77 and 70,269.90 is: 96,798.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,408.94 : 113,520.77 = 70,269.90 : x
  2. Step 2: Convert to fraction form
    82,408.94/113,520.77 = 70,269.90/x
  3. Step 3: Cross multiply
    82,408.94x = 113,520.77 × 70,269.90
  4. Step 4: Simplify right side
    82,408.94x = 7,977,092,642.28
  5. Step 5: Solve for x
    x = 7,977,092,642.28/82,408.94
  6. Step 6: Final answer
    x = 96,798.87

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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.