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Finding the Fourth Proportional to 57,240.74, 78,991.04 and 31,742.99

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Solution

The fourth proportional to 57,240.74, 78,991.04 and 31,742.99 is: 43,804.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,240.74 : 78,991.04 = 31,742.99 : x
  2. Step 2: Convert to fraction form
    57,240.74/78,991.04 = 31,742.99/x
  3. Step 3: Cross multiply
    57,240.74x = 78,991.04 × 31,742.99
  4. Step 4: Simplify right side
    57,240.74x = 2,507,411,773.43
  5. Step 5: Solve for x
    x = 2,507,411,773.43/57,240.74
  6. Step 6: Final answer
    x = 43,804.67

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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.