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Finding the Fourth Proportional to 102,603.90, 153,622.45 and 52,576.28

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Solution

The fourth proportional to 102,603.90, 153,622.45 and 52,576.28 is: 78,719.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,603.90 : 153,622.45 = 52,576.28 : x
  2. Step 2: Convert to fraction form
    102,603.90/153,622.45 = 52,576.28/x
  3. Step 3: Cross multiply
    102,603.90x = 153,622.45 × 52,576.28
  4. Step 4: Simplify right side
    102,603.90x = 8,076,896,945.49
  5. Step 5: Solve for x
    x = 8,076,896,945.49/102,603.90
  6. Step 6: Final answer
    x = 78,719.20

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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.