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Finding the Fourth Proportional to 71,602.80, 107,404.20 and 19,017.60

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Solution

The fourth proportional to 71,602.80, 107,404.20 and 19,017.60 is: 28,526.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,602.80 : 107,404.20 = 19,017.60 : x
  2. Step 2: Convert to fraction form
    71,602.80/107,404.20 = 19,017.60/x
  3. Step 3: Cross multiply
    71,602.80x = 107,404.20 × 19,017.60
  4. Step 4: Simplify right side
    71,602.80x = 2,042,570,113.92
  5. Step 5: Solve for x
    x = 2,042,570,113.92/71,602.80
  6. Step 6: Final answer
    x = 28,526.40

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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.