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Finding the Fourth Proportional to 76,500.35, 114,750.37 and 20,340.47

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Solution

The fourth proportional to 76,500.35, 114,750.37 and 20,340.47 is: 30,510.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,500.35 : 114,750.37 = 20,340.47 : x
  2. Step 2: Convert to fraction form
    76,500.35/114,750.37 = 20,340.47/x
  3. Step 3: Cross multiply
    76,500.35x = 114,750.37 × 20,340.47
  4. Step 4: Simplify right side
    76,500.35x = 2,334,076,125.30
  5. Step 5: Solve for x
    x = 2,334,076,125.30/76,500.35
  6. Step 6: Final answer
    x = 30,510.66

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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.