Home / 71,407.89-98,544.11-39,140.35

Finding the Fourth Proportional to 71,407.89, 98,544.11 and 39,140.35

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Solution

The fourth proportional to 71,407.89, 98,544.11 and 39,140.35 is: 54,014.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,407.89 : 98,544.11 = 39,140.35 : x
  2. Step 2: Convert to fraction form
    71,407.89/98,544.11 = 39,140.35/x
  3. Step 3: Cross multiply
    71,407.89x = 98,544.11 × 39,140.35
  4. Step 4: Simplify right side
    71,407.89x = 3,857,051,232.24
  5. Step 5: Solve for x
    x = 3,857,051,232.24/71,407.89
  6. Step 6: Final answer
    x = 54,014.36

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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.