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Finding the Fourth Proportional to 72,503.32, 100,068.24 and 47,309.08

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Solution

The fourth proportional to 72,503.32, 100,068.24 and 47,309.08 is: 65,295.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,503.32 : 100,068.24 = 47,309.08 : x
  2. Step 2: Convert to fraction form
    72,503.32/100,068.24 = 47,309.08/x
  3. Step 3: Cross multiply
    72,503.32x = 100,068.24 × 47,309.08
  4. Step 4: Simplify right side
    72,503.32x = 4,734,136,371.62
  5. Step 5: Solve for x
    x = 4,734,136,371.62/72,503.32
  6. Step 6: Final answer
    x = 65,295.44

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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.