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Finding the Fourth Proportional to 64,828.90, 97,243.35 and 15,580.90

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Solution

The fourth proportional to 64,828.90, 97,243.35 and 15,580.90 is: 23,371.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,828.90 : 97,243.35 = 15,580.90 : x
  2. Step 2: Convert to fraction form
    64,828.90/97,243.35 = 15,580.90/x
  3. Step 3: Cross multiply
    64,828.90x = 97,243.35 × 15,580.90
  4. Step 4: Simplify right side
    64,828.90x = 1,515,138,912.02
  5. Step 5: Solve for x
    x = 1,515,138,912.02/64,828.90
  6. Step 6: Final answer
    x = 23,371.35

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1.5x scale

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.