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Finding the Fourth Proportional to 70,303.74, 105,456.01 and 28,750.74

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Solution

The fourth proportional to 70,303.74, 105,456.01 and 28,750.74 is: 43,126.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,303.74 : 105,456.01 = 28,750.74 : x
  2. Step 2: Convert to fraction form
    70,303.74/105,456.01 = 28,750.74/x
  3. Step 3: Cross multiply
    70,303.74x = 105,456.01 × 28,750.74
  4. Step 4: Simplify right side
    70,303.74x = 3,031,938,324.95
  5. Step 5: Solve for x
    x = 3,031,938,324.95/70,303.74
  6. Step 6: Final answer
    x = 43,126.27

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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.