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Finding the Fourth Proportional to 67,675.76, 101,513.64 and 20,927.60

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Solution

The fourth proportional to 67,675.76, 101,513.64 and 20,927.60 is: 31,391.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,675.76 : 101,513.64 = 20,927.60 : x
  2. Step 2: Convert to fraction form
    67,675.76/101,513.64 = 20,927.60/x
  3. Step 3: Cross multiply
    67,675.76x = 101,513.64 × 20,927.60
  4. Step 4: Simplify right side
    67,675.76x = 2,124,436,852.46
  5. Step 5: Solve for x
    x = 2,124,436,852.46/67,675.76
  6. Step 6: Final answer
    x = 31,391.40

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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.