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Finding the Fourth Proportional to 76,395.76, 114,598.80 and 20,235.12

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Solution

The fourth proportional to 76,395.76, 114,598.80 and 20,235.12 is: 30,354.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,395.76 : 114,598.80 = 20,235.12 : x
  2. Step 2: Convert to fraction form
    76,395.76/114,598.80 = 20,235.12/x
  3. Step 3: Cross multiply
    76,395.76x = 114,598.80 × 20,235.12
  4. Step 4: Simplify right side
    76,395.76x = 2,318,920,040.11
  5. Step 5: Solve for x
    x = 2,318,920,040.11/76,395.76
  6. Step 6: Final answer
    x = 30,354.04

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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.