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Finding the Fourth Proportional to 71,975.98, 107,966.40 and 40,384.36

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Solution

The fourth proportional to 71,975.98, 107,966.40 and 40,384.36 is: 60,577.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,975.98 : 107,966.40 = 40,384.36 : x
  2. Step 2: Convert to fraction form
    71,975.98/107,966.40 = 40,384.36/x
  3. Step 3: Cross multiply
    71,975.98x = 107,966.40 × 40,384.36
  4. Step 4: Simplify right side
    71,975.98x = 4,360,153,965.50
  5. Step 5: Solve for x
    x = 4,360,153,965.50/71,975.98
  6. Step 6: Final answer
    x = 60,577.90

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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.