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Finding the Fourth Proportional to 30,605.41, 45,900.55 and 8,417.71

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Solution

The fourth proportional to 30,605.41, 45,900.55 and 8,417.71 is: 12,624.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,605.41 : 45,900.55 = 8,417.71 : x
  2. Step 2: Convert to fraction form
    30,605.41/45,900.55 = 8,417.71/x
  3. Step 3: Cross multiply
    30,605.41x = 45,900.55 × 8,417.71
  4. Step 4: Simplify right side
    30,605.41x = 386,377,518.74
  5. Step 5: Solve for x
    x = 386,377,518.74/30,605.41
  6. Step 6: Final answer
    x = 12,624.48

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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.