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Finding the Fourth Proportional to 51,197.37, 70,643.80 and 28,531.39

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Solution

The fourth proportional to 51,197.37, 70,643.80 and 28,531.39 is: 39,368.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,197.37 : 70,643.80 = 28,531.39 : x
  2. Step 2: Convert to fraction form
    51,197.37/70,643.80 = 28,531.39/x
  3. Step 3: Cross multiply
    51,197.37x = 70,643.80 × 28,531.39
  4. Step 4: Simplify right side
    51,197.37x = 2,015,565,808.88
  5. Step 5: Solve for x
    x = 2,015,565,808.88/51,197.37
  6. Step 6: Final answer
    x = 39,368.54

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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.