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Finding the Fourth Proportional to 40,295.80, 60,384.54 and 20,277.76

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Solution

The fourth proportional to 40,295.80, 60,384.54 and 20,277.76 is: 30,386.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,295.80 : 60,384.54 = 20,277.76 : x
  2. Step 2: Convert to fraction form
    40,295.80/60,384.54 = 20,277.76/x
  3. Step 3: Cross multiply
    40,295.80x = 60,384.54 × 20,277.76
  4. Step 4: Simplify right side
    40,295.80x = 1,224,463,209.83
  5. Step 5: Solve for x
    x = 1,224,463,209.83/40,295.80
  6. Step 6: Final answer
    x = 30,386.87

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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.