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Finding the Fourth Proportional to 70,262.04, 105,393.06 and 28,709

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Solution

The fourth proportional to 70,262.04, 105,393.06 and 28,709 is: 43,063.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,262.04 : 105,393.06 = 28,709 : x
  2. Step 2: Convert to fraction form
    70,262.04/105,393.06 = 28,709/x
  3. Step 3: Cross multiply
    70,262.04x = 105,393.06 × 28,709
  4. Step 4: Simplify right side
    70,262.04x = 3,025,729,359.54
  5. Step 5: Solve for x
    x = 3,025,729,359.54/70,262.04
  6. Step 6: Final answer
    x = 43,063.50

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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.