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Finding the Fourth Proportional to 69,611.80, 96,064.64 and 40,929.84

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Solution

The fourth proportional to 69,611.80, 96,064.64 and 40,929.84 is: 56,483.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,611.80 : 96,064.64 = 40,929.84 : x
  2. Step 2: Convert to fraction form
    69,611.80/96,064.64 = 40,929.84/x
  3. Step 3: Cross multiply
    69,611.80x = 96,064.64 × 40,929.84
  4. Step 4: Simplify right side
    69,611.80x = 3,931,910,344.86
  5. Step 5: Solve for x
    x = 3,931,910,344.86/69,611.80
  6. Step 6: Final answer
    x = 56,483.39

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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.