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Finding the Fourth Proportional to 89,907.40, 134,819.34 and 52,478.28

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Solution

The fourth proportional to 89,907.40, 134,819.34 and 52,478.28 is: 78,693.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,907.40 : 134,819.34 = 52,478.28 : x
  2. Step 2: Convert to fraction form
    89,907.40/134,819.34 = 52,478.28/x
  3. Step 3: Cross multiply
    89,907.40x = 134,819.34 × 52,478.28
  4. Step 4: Simplify right side
    89,907.40x = 7,075,087,073.94
  5. Step 5: Solve for x
    x = 7,075,087,073.94/89,907.40
  6. Step 6: Final answer
    x = 78,693.04

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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.