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Finding the Fourth Proportional to 87,048.90, 120,083.27 and 56,851.90

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Solution

The fourth proportional to 87,048.90, 120,083.27 and 56,851.90 is: 78,426.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,048.90 : 120,083.27 = 56,851.90 : x
  2. Step 2: Convert to fraction form
    87,048.90/120,083.27 = 56,851.90/x
  3. Step 3: Cross multiply
    87,048.90x = 120,083.27 × 56,851.90
  4. Step 4: Simplify right side
    87,048.90x = 6,826,961,633.14
  5. Step 5: Solve for x
    x = 6,826,961,633.14/87,048.90
  6. Step 6: Final answer
    x = 78,426.74

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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.