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Finding the Fourth Proportional to 70,473.75, 105,686.19 and 28,341.33

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Solution

The fourth proportional to 70,473.75, 105,686.19 and 28,341.33 is: 42,502.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,473.75 : 105,686.19 = 28,341.33 : x
  2. Step 2: Convert to fraction form
    70,473.75/105,686.19 = 28,341.33/x
  3. Step 3: Cross multiply
    70,473.75x = 105,686.19 × 28,341.33
  4. Step 4: Simplify right side
    70,473.75x = 2,995,287,187.23
  5. Step 5: Solve for x
    x = 2,995,287,187.23/70,473.75
  6. Step 6: Final answer
    x = 42,502.17

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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.