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Finding the Fourth Proportional to 70,899.40, 106,339.02 and 28,204.84

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Solution

The fourth proportional to 70,899.40, 106,339.02 and 28,204.84 is: 42,303.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,899.40 : 106,339.02 = 28,204.84 : x
  2. Step 2: Convert to fraction form
    70,899.40/106,339.02 = 28,204.84/x
  3. Step 3: Cross multiply
    70,899.40x = 106,339.02 × 28,204.84
  4. Step 4: Simplify right side
    70,899.40x = 2,999,275,044.86
  5. Step 5: Solve for x
    x = 2,999,275,044.86/70,899.40
  6. Step 6: Final answer
    x = 42,303.25

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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.