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Finding the Fourth Proportional to 70,042.08, 105,003.40 and 30,569.68

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Solution

The fourth proportional to 70,042.08, 105,003.40 and 30,569.68 is: 45,828.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,042.08 : 105,003.40 = 30,569.68 : x
  2. Step 2: Convert to fraction form
    70,042.08/105,003.40 = 30,569.68/x
  3. Step 3: Cross multiply
    70,042.08x = 105,003.40 × 30,569.68
  4. Step 4: Simplify right side
    70,042.08x = 3,209,920,336.91
  5. Step 5: Solve for x
    x = 3,209,920,336.91/70,042.08
  6. Step 6: Final answer
    x = 45,828.46

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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.