Home / 56,991.69-85,491.23-21,931.35

Finding the Fourth Proportional to 56,991.69, 85,491.23 and 21,931.35

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Solution

The fourth proportional to 56,991.69, 85,491.23 and 21,931.35 is: 32,898.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,991.69 : 85,491.23 = 21,931.35 : x
  2. Step 2: Convert to fraction form
    56,991.69/85,491.23 = 21,931.35/x
  3. Step 3: Cross multiply
    56,991.69x = 85,491.23 × 21,931.35
  4. Step 4: Simplify right side
    56,991.69x = 1,874,938,087.06
  5. Step 5: Solve for x
    x = 1,874,938,087.06/56,991.69
  6. Step 6: Final answer
    x = 32,898.45

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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.