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Finding the Fourth Proportional to 70,493.06, 105,674.83 and 30,487.02

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Solution

The fourth proportional to 70,493.06, 105,674.83 and 30,487.02 is: 45,702.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,493.06 : 105,674.83 = 30,487.02 : x
  2. Step 2: Convert to fraction form
    70,493.06/105,674.83 = 30,487.02/x
  3. Step 3: Cross multiply
    70,493.06x = 105,674.83 × 30,487.02
  4. Step 4: Simplify right side
    70,493.06x = 3,221,710,655.71
  5. Step 5: Solve for x
    x = 3,221,710,655.71/70,493.06
  6. Step 6: Final answer
    x = 45,702.52

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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.