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Finding the Fourth Proportional to 70,298.28, 105,486.42 and 28,774.44

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Solution

The fourth proportional to 70,298.28, 105,486.42 and 28,774.44 is: 43,177.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,298.28 : 105,486.42 = 28,774.44 : x
  2. Step 2: Convert to fraction form
    70,298.28/105,486.42 = 28,774.44/x
  3. Step 3: Cross multiply
    70,298.28x = 105,486.42 × 28,774.44
  4. Step 4: Simplify right side
    70,298.28x = 3,035,312,663.10
  5. Step 5: Solve for x
    x = 3,035,312,663.10/70,298.28
  6. Step 6: Final answer
    x = 43,177.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.