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Finding the Fourth Proportional to 70,235.88, 105,353.91 and 28,682.88

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Solution

The fourth proportional to 70,235.88, 105,353.91 and 28,682.88 is: 43,024.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,235.88 : 105,353.91 = 28,682.88 : x
  2. Step 2: Convert to fraction form
    70,235.88/105,353.91 = 28,682.88/x
  3. Step 3: Cross multiply
    70,235.88x = 105,353.91 × 28,682.88
  4. Step 4: Simplify right side
    70,235.88x = 3,021,853,558.06
  5. Step 5: Solve for x
    x = 3,021,853,558.06/70,235.88
  6. Step 6: Final answer
    x = 43,024.36

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1.5x scale

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.