Home / 61,117.50-91,690.60-18,995.42

Finding the Fourth Proportional to 61,117.50, 91,690.60 and 18,995.42

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Solution

The fourth proportional to 61,117.50, 91,690.60 and 18,995.42 is: 28,497.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,117.50 : 91,690.60 = 18,995.42 : x
  2. Step 2: Convert to fraction form
    61,117.50/91,690.60 = 18,995.42/x
  3. Step 3: Cross multiply
    61,117.50x = 91,690.60 × 18,995.42
  4. Step 4: Simplify right side
    61,117.50x = 1,741,701,457.05
  5. Step 5: Solve for x
    x = 1,741,701,457.05/61,117.50
  6. Step 6: Final answer
    x = 28,497.59

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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.