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Finding the Fourth Proportional to 60,771.68, 91,172.92 and 18,653.90

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Solution

The fourth proportional to 60,771.68, 91,172.92 and 18,653.90 is: 27,985.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,771.68 : 91,172.92 = 18,653.90 : x
  2. Step 2: Convert to fraction form
    60,771.68/91,172.92 = 18,653.90/x
  3. Step 3: Cross multiply
    60,771.68x = 91,172.92 × 18,653.90
  4. Step 4: Simplify right side
    60,771.68x = 1,700,730,012.40
  5. Step 5: Solve for x
    x = 1,700,730,012.40/60,771.68
  6. Step 6: Final answer
    x = 27,985.57

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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.