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Finding the Fourth Proportional to 70,427.52, 105,647.04 and 28,874.88

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Solution

The fourth proportional to 70,427.52, 105,647.04 and 28,874.88 is: 43,314.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,427.52 : 105,647.04 = 28,874.88 : x
  2. Step 2: Convert to fraction form
    70,427.52/105,647.04 = 28,874.88/x
  3. Step 3: Cross multiply
    70,427.52x = 105,647.04 × 28,874.88
  4. Step 4: Simplify right side
    70,427.52x = 3,050,545,602.36
  5. Step 5: Solve for x
    x = 3,050,545,602.36/70,427.52
  6. Step 6: Final answer
    x = 43,314.68

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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.