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Finding the Fourth Proportional to 64,902.40, 97,368.24 and 20,531.84

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Solution

The fourth proportional to 64,902.40, 97,368.24 and 20,531.84 is: 30,802.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,902.40 : 97,368.24 = 20,531.84 : x
  2. Step 2: Convert to fraction form
    64,902.40/97,368.24 = 20,531.84/x
  3. Step 3: Cross multiply
    64,902.40x = 97,368.24 × 20,531.84
  4. Step 4: Simplify right side
    64,902.40x = 1,999,149,124.76
  5. Step 5: Solve for x
    x = 1,999,149,124.76/64,902.40
  6. Step 6: Final answer
    x = 30,802.39

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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.