Home / 71,803.35-99,085.95-39,971.57

Finding the Fourth Proportional to 71,803.35, 99,085.95 and 39,971.57

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Solution

The fourth proportional to 71,803.35, 99,085.95 and 39,971.57 is: 55,159.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,803.35 : 99,085.95 = 39,971.57 : x
  2. Step 2: Convert to fraction form
    71,803.35/99,085.95 = 39,971.57/x
  3. Step 3: Cross multiply
    71,803.35x = 99,085.95 × 39,971.57
  4. Step 4: Simplify right side
    71,803.35x = 3,960,620,491.01
  5. Step 5: Solve for x
    x = 3,960,620,491.01/71,803.35
  6. Step 6: Final answer
    x = 55,159.27

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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.