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Finding the Fourth Proportional to 64,918.51, 97,368.01 and 20,539.49

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Solution

The fourth proportional to 64,918.51, 97,368.01 and 20,539.49 is: 30,806.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,918.51 : 97,368.01 = 20,539.49 : x
  2. Step 2: Convert to fraction form
    64,918.51/97,368.01 = 20,539.49/x
  3. Step 3: Cross multiply
    64,918.51x = 97,368.01 × 20,539.49
  4. Step 4: Simplify right side
    64,918.51x = 1,999,889,277.22
  5. Step 5: Solve for x
    x = 1,999,889,277.22/64,918.51
  6. Step 6: Final answer
    x = 30,806.15

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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.