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Finding the Fourth Proportional to 70,237.08, 105,355.72 and 28,684.08

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Solution

The fourth proportional to 70,237.08, 105,355.72 and 28,684.08 is: 43,026.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,237.08 : 105,355.72 = 28,684.08 : x
  2. Step 2: Convert to fraction form
    70,237.08/105,355.72 = 28,684.08/x
  3. Step 3: Cross multiply
    70,237.08x = 105,355.72 × 28,684.08
  4. Step 4: Simplify right side
    70,237.08x = 3,022,031,900.94
  5. Step 5: Solve for x
    x = 3,022,031,900.94/70,237.08
  6. Step 6: Final answer
    x = 43,026.16

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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.