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Finding the Fourth Proportional to 40,390.58, 60,578.58 and 12,303.92

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Solution

The fourth proportional to 40,390.58, 60,578.58 and 12,303.92 is: 18,453.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,390.58 : 60,578.58 = 12,303.92 : x
  2. Step 2: Convert to fraction form
    40,390.58/60,578.58 = 12,303.92/x
  3. Step 3: Cross multiply
    40,390.58x = 60,578.58 × 12,303.92
  4. Step 4: Simplify right side
    40,390.58x = 745,354,002.03
  5. Step 5: Solve for x
    x = 745,354,002.03/40,390.58
  6. Step 6: Final answer
    x = 18,453.66

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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.