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Finding the Fourth Proportional to 87,083, 120,185.88 and 51,276.32

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Solution

The fourth proportional to 87,083, 120,185.88 and 51,276.32 is: 70,768.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,083 : 120,185.88 = 51,276.32 : x
  2. Step 2: Convert to fraction form
    87,083/120,185.88 = 51,276.32/x
  3. Step 3: Cross multiply
    87,083x = 120,185.88 × 51,276.32
  4. Step 4: Simplify right side
    87,083x = 6,162,689,642.36
  5. Step 5: Solve for x
    x = 6,162,689,642.36/87,083
  6. Step 6: Final answer
    x = 70,768.00

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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.