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Finding the Fourth Proportional to 58,438.41, 80,645.03 and 31,580.91

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Solution

The fourth proportional to 58,438.41, 80,645.03 and 31,580.91 is: 43,581.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,438.41 : 80,645.03 = 31,580.91 : x
  2. Step 2: Convert to fraction form
    58,438.41/80,645.03 = 31,580.91/x
  3. Step 3: Cross multiply
    58,438.41x = 80,645.03 × 31,580.91
  4. Step 4: Simplify right side
    58,438.41x = 2,546,843,434.38
  5. Step 5: Solve for x
    x = 2,546,843,434.38/58,438.41
  6. Step 6: Final answer
    x = 43,581.67

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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.