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Finding the Fourth Proportional to 72,594.98, 100,172.01 and 40,329.44

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Solution

The fourth proportional to 72,594.98, 100,172.01 and 40,329.44 is: 55,649.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,594.98 : 100,172.01 = 40,329.44 : x
  2. Step 2: Convert to fraction form
    72,594.98/100,172.01 = 40,329.44/x
  3. Step 3: Cross multiply
    72,594.98x = 100,172.01 × 40,329.44
  4. Step 4: Simplify right side
    72,594.98x = 4,039,880,566.11
  5. Step 5: Solve for x
    x = 4,039,880,566.11/72,594.98
  6. Step 6: Final answer
    x = 55,649.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.