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Finding the Fourth Proportional to 60,290.61, 90,448.88 and 20,313.56

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Solution

The fourth proportional to 60,290.61, 90,448.88 and 20,313.56 is: 30,474.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,290.61 : 90,448.88 = 20,313.56 : x
  2. Step 2: Convert to fraction form
    60,290.61/90,448.88 = 20,313.56/x
  3. Step 3: Cross multiply
    60,290.61x = 90,448.88 × 20,313.56
  4. Step 4: Simplify right side
    60,290.61x = 1,837,338,875.37
  5. Step 5: Solve for x
    x = 1,837,338,875.37/60,290.61
  6. Step 6: Final answer
    x = 30,474.71

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1.5x scale

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.