Home / 55,136.20-76,085.76-29,985.72

Finding the Fourth Proportional to 55,136.20, 76,085.76 and 29,985.72

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Solution

The fourth proportional to 55,136.20, 76,085.76 and 29,985.72 is: 41,379.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,136.20 : 76,085.76 = 29,985.72 : x
  2. Step 2: Convert to fraction form
    55,136.20/76,085.76 = 29,985.72/x
  3. Step 3: Cross multiply
    55,136.20x = 76,085.76 × 29,985.72
  4. Step 4: Simplify right side
    55,136.20x = 2,281,486,295.35
  5. Step 5: Solve for x
    x = 2,281,486,295.35/55,136.20
  6. Step 6: Final answer
    x = 41,379.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.