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Finding the Fourth Proportional to 64,950.31, 97,428.31 and 20,580.34

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Solution

The fourth proportional to 64,950.31, 97,428.31 and 20,580.34 is: 30,871.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,950.31 : 97,428.31 = 20,580.34 : x
  2. Step 2: Convert to fraction form
    64,950.31/97,428.31 = 20,580.34/x
  3. Step 3: Cross multiply
    64,950.31x = 97,428.31 × 20,580.34
  4. Step 4: Simplify right side
    64,950.31x = 2,005,107,206.83
  5. Step 5: Solve for x
    x = 2,005,107,206.83/64,950.31
  6. Step 6: Final answer
    x = 30,871.40

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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.