Home / 97,638.20-146,457.30-57,721.40

Finding the Fourth Proportional to 97,638.20, 146,457.30 and 57,721.40

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Solution

The fourth proportional to 97,638.20, 146,457.30 and 57,721.40 is: 86,582.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,638.20 : 146,457.30 = 57,721.40 : x
  2. Step 2: Convert to fraction form
    97,638.20/146,457.30 = 57,721.40/x
  3. Step 3: Cross multiply
    97,638.20x = 146,457.30 × 57,721.40
  4. Step 4: Simplify right side
    97,638.20x = 8,453,720,396.22
  5. Step 5: Solve for x
    x = 8,453,720,396.22/97,638.20
  6. Step 6: Final answer
    x = 86,582.10

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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.