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Finding the Fourth Proportional to 51,435.84, 70,979.52 and 29,080.32

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Solution

The fourth proportional to 51,435.84, 70,979.52 and 29,080.32 is: 40,129.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,435.84 : 70,979.52 = 29,080.32 : x
  2. Step 2: Convert to fraction form
    51,435.84/70,979.52 = 29,080.32/x
  3. Step 3: Cross multiply
    51,435.84x = 70,979.52 × 29,080.32
  4. Step 4: Simplify right side
    51,435.84x = 2,064,107,155.05
  5. Step 5: Solve for x
    x = 2,064,107,155.05/51,435.84
  6. Step 6: Final answer
    x = 40,129.75

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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.