Home / 58,587.35-87,828.40-21,138.62

Finding the Fourth Proportional to 58,587.35, 87,828.40 and 21,138.62

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Solution

The fourth proportional to 58,587.35, 87,828.40 and 21,138.62 is: 31,688.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,587.35 : 87,828.40 = 21,138.62 : x
  2. Step 2: Convert to fraction form
    58,587.35/87,828.40 = 21,138.62/x
  3. Step 3: Cross multiply
    58,587.35x = 87,828.40 × 21,138.62
  4. Step 4: Simplify right side
    58,587.35x = 1,856,571,172.81
  5. Step 5: Solve for x
    x = 1,856,571,172.81/58,587.35
  6. Step 6: Final answer
    x = 31,688.94

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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.