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Finding the Fourth Proportional to 51,168.51, 70,612.08 and 28,507.09

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Solution

The fourth proportional to 51,168.51, 70,612.08 and 28,507.09 is: 39,339.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,168.51 : 70,612.08 = 28,507.09 : x
  2. Step 2: Convert to fraction form
    51,168.51/70,612.08 = 28,507.09/x
  3. Step 3: Cross multiply
    51,168.51x = 70,612.08 × 28,507.09
  4. Step 4: Simplify right side
    51,168.51x = 2,012,944,848.79
  5. Step 5: Solve for x
    x = 2,012,944,848.79/51,168.51
  6. Step 6: Final answer
    x = 39,339.52

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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.