Home / 71,297.18-107,139.63-38,040.74

Finding the Fourth Proportional to 71,297.18, 107,139.63 and 38,040.74

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Solution

The fourth proportional to 71,297.18, 107,139.63 and 38,040.74 is: 57,164.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,297.18 : 107,139.63 = 38,040.74 : x
  2. Step 2: Convert to fraction form
    71,297.18/107,139.63 = 38,040.74/x
  3. Step 3: Cross multiply
    71,297.18x = 107,139.63 × 38,040.74
  4. Step 4: Simplify right side
    71,297.18x = 4,075,670,808.53
  5. Step 5: Solve for x
    x = 4,075,670,808.53/71,297.18
  6. Step 6: Final answer
    x = 57,164.54

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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.