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Finding the Fourth Proportional to 51,047.08, 70,451.30 and 28,691.08

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Solution

The fourth proportional to 51,047.08, 70,451.30 and 28,691.08 is: 39,597.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,047.08 : 70,451.30 = 28,691.08 : x
  2. Step 2: Convert to fraction form
    51,047.08/70,451.30 = 28,691.08/x
  3. Step 3: Cross multiply
    51,047.08x = 70,451.30 × 28,691.08
  4. Step 4: Simplify right side
    51,047.08x = 2,021,323,884.40
  5. Step 5: Solve for x
    x = 2,021,323,884.40/51,047.08
  6. Step 6: Final answer
    x = 39,597.25

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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.