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Finding the Fourth Proportional to 64,851, 97,276.50 and 15,603

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Solution

The fourth proportional to 64,851, 97,276.50 and 15,603 is: 23,404.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,851 : 97,276.50 = 15,603 : x
  2. Step 2: Convert to fraction form
    64,851/97,276.50 = 15,603/x
  3. Step 3: Cross multiply
    64,851x = 97,276.50 × 15,603
  4. Step 4: Simplify right side
    64,851x = 1,517,805,229.50
  5. Step 5: Solve for x
    x = 1,517,805,229.50/64,851
  6. Step 6: Final answer
    x = 23,404.50

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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.