Home / 72,537.89-100,109.48-40,706.91

Finding the Fourth Proportional to 72,537.89, 100,109.48 and 40,706.91

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Solution

The fourth proportional to 72,537.89, 100,109.48 and 40,706.91 is: 56,179.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,537.89 : 100,109.48 = 40,706.91 : x
  2. Step 2: Convert to fraction form
    72,537.89/100,109.48 = 40,706.91/x
  3. Step 3: Cross multiply
    72,537.89x = 100,109.48 × 40,706.91
  4. Step 4: Simplify right side
    72,537.89x = 4,075,147,388.97
  5. Step 5: Solve for x
    x = 4,075,147,388.97/72,537.89
  6. Step 6: Final answer
    x = 56,179.57

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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.