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Finding the Fourth Proportional to 87,653.64, 120,977.16 and 84,737.64

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Solution

The fourth proportional to 87,653.64, 120,977.16 and 84,737.64 is: 116,952.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,653.64 : 120,977.16 = 84,737.64 : x
  2. Step 2: Convert to fraction form
    87,653.64/120,977.16 = 84,737.64/x
  3. Step 3: Cross multiply
    87,653.64x = 120,977.16 × 84,737.64
  4. Step 4: Simplify right side
    87,653.64x = 10,251,319,032.30
  5. Step 5: Solve for x
    x = 10,251,319,032.30/87,653.64
  6. Step 6: Final answer
    x = 116,952.58

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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.