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Finding the Fourth Proportional to 105,523.60, 145,621.46 and 57,124.44

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Solution

The fourth proportional to 105,523.60, 145,621.46 and 57,124.44 is: 78,831.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,523.60 : 145,621.46 = 57,124.44 : x
  2. Step 2: Convert to fraction form
    105,523.60/145,621.46 = 57,124.44/x
  3. Step 3: Cross multiply
    105,523.60x = 145,621.46 × 57,124.44
  4. Step 4: Simplify right side
    105,523.60x = 8,318,544,256.30
  5. Step 5: Solve for x
    x = 8,318,544,256.30/105,523.60
  6. Step 6: Final answer
    x = 78,831.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.