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Finding the Fourth Proportional to 70,061.56, 105,055.23 and 30,572.56

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Solution

The fourth proportional to 70,061.56, 105,055.23 and 30,572.56 is: 45,842.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,061.56 : 105,055.23 = 30,572.56 : x
  2. Step 2: Convert to fraction form
    70,061.56/105,055.23 = 30,572.56/x
  3. Step 3: Cross multiply
    70,061.56x = 105,055.23 × 30,572.56
  4. Step 4: Simplify right side
    70,061.56x = 3,211,807,322.49
  5. Step 5: Solve for x
    x = 3,211,807,322.49/70,061.56
  6. Step 6: Final answer
    x = 45,842.65

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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.