Home / 61,000.18-91,506.21-18,878.56

Finding the Fourth Proportional to 61,000.18, 91,506.21 and 18,878.56

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Solution

The fourth proportional to 61,000.18, 91,506.21 and 18,878.56 is: 28,319.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,000.18 : 91,506.21 = 18,878.56 : x
  2. Step 2: Convert to fraction form
    61,000.18/91,506.21 = 18,878.56/x
  3. Step 3: Cross multiply
    61,000.18x = 91,506.21 × 18,878.56
  4. Step 4: Simplify right side
    61,000.18x = 1,727,505,475.86
  5. Step 5: Solve for x
    x = 1,727,505,475.86/61,000.18
  6. Step 6: Final answer
    x = 28,319.68

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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.