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Finding the Fourth Proportional to 58,250, 87,393.56 and 20,809.36

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Solution

The fourth proportional to 58,250, 87,393.56 and 20,809.36 is: 31,220.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,250 : 87,393.56 = 20,809.36 : x
  2. Step 2: Convert to fraction form
    58,250/87,393.56 = 20,809.36/x
  3. Step 3: Cross multiply
    58,250x = 87,393.56 × 20,809.36
  4. Step 4: Simplify right side
    58,250x = 1,818,604,051.72
  5. Step 5: Solve for x
    x = 1,818,604,051.72/58,250
  6. Step 6: Final answer
    x = 31,220.67

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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.