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Finding the Fourth Proportional to 51,258.08, 70,736.16 and 28,902.08

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Solution

The fourth proportional to 51,258.08, 70,736.16 and 28,902.08 is: 39,884.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,258.08 : 70,736.16 = 28,902.08 : x
  2. Step 2: Convert to fraction form
    51,258.08/70,736.16 = 28,902.08/x
  3. Step 3: Cross multiply
    51,258.08x = 70,736.16 × 28,902.08
  4. Step 4: Simplify right side
    51,258.08x = 2,044,422,155.21
  5. Step 5: Solve for x
    x = 2,044,422,155.21/51,258.08
  6. Step 6: Final answer
    x = 39,884.88

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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.