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Finding the Fourth Proportional to 64,968.95, 97,453.41 and 15,720.95

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Solution

The fourth proportional to 64,968.95, 97,453.41 and 15,720.95 is: 23,581.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,968.95 : 97,453.41 = 15,720.95 : x
  2. Step 2: Convert to fraction form
    64,968.95/97,453.41 = 15,720.95/x
  3. Step 3: Cross multiply
    64,968.95x = 97,453.41 × 15,720.95
  4. Step 4: Simplify right side
    64,968.95x = 1,532,059,698.67
  5. Step 5: Solve for x
    x = 1,532,059,698.67/64,968.95
  6. Step 6: Final answer
    x = 23,581.42

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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.