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Finding the Fourth Proportional to 40,465.50, 60,709.05 and 12,763.50

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Solution

The fourth proportional to 40,465.50, 60,709.05 and 12,763.50 is: 19,148.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,465.50 : 60,709.05 = 12,763.50 : x
  2. Step 2: Convert to fraction form
    40,465.50/60,709.05 = 12,763.50/x
  3. Step 3: Cross multiply
    40,465.50x = 60,709.05 × 12,763.50
  4. Step 4: Simplify right side
    40,465.50x = 774,859,959.68
  5. Step 5: Solve for x
    x = 774,859,959.68/40,465.50
  6. Step 6: Final answer
    x = 19,148.66

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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.