Home / 74,308.07-111,271.80-40,991.10

Finding the Fourth Proportional to 74,308.07, 111,271.80 and 40,991.10

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Solution

The fourth proportional to 74,308.07, 111,271.80 and 40,991.10 is: 61,381.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,308.07 : 111,271.80 = 40,991.10 : x
  2. Step 2: Convert to fraction form
    74,308.07/111,271.80 = 40,991.10/x
  3. Step 3: Cross multiply
    74,308.07x = 111,271.80 × 40,991.10
  4. Step 4: Simplify right side
    74,308.07x = 4,561,153,480.98
  5. Step 5: Solve for x
    x = 4,561,153,480.98/74,308.07
  6. Step 6: Final answer
    x = 61,381.67

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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.