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Finding the Fourth Proportional to 72,502.48, 100,052.98 and 42,285.43

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Solution

The fourth proportional to 72,502.48, 100,052.98 and 42,285.43 is: 58,353.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,502.48 : 100,052.98 = 42,285.43 : x
  2. Step 2: Convert to fraction form
    72,502.48/100,052.98 = 42,285.43/x
  3. Step 3: Cross multiply
    72,502.48x = 100,052.98 × 42,285.43
  4. Step 4: Simplify right side
    72,502.48x = 4,230,783,282.08
  5. Step 5: Solve for x
    x = 4,230,783,282.08/72,502.48
  6. Step 6: Final answer
    x = 58,353.64

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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.