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Finding the Fourth Proportional to 74,328.30, 111,492.45 and 71,703.90

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Solution

The fourth proportional to 74,328.30, 111,492.45 and 71,703.90 is: 107,555.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,328.30 : 111,492.45 = 71,703.90 : x
  2. Step 2: Convert to fraction form
    74,328.30/111,492.45 = 71,703.90/x
  3. Step 3: Cross multiply
    74,328.30x = 111,492.45 × 71,703.90
  4. Step 4: Simplify right side
    74,328.30x = 7,994,443,485.56
  5. Step 5: Solve for x
    x = 7,994,443,485.56/74,328.30
  6. Step 6: Final answer
    x = 107,555.85

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1.5x scale

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.