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Finding the Fourth Proportional to 72,858.35, 100,541.81 and 40,592.21

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Solution

The fourth proportional to 72,858.35, 100,541.81 and 40,592.21 is: 56,015.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,858.35 : 100,541.81 = 40,592.21 : x
  2. Step 2: Convert to fraction form
    72,858.35/100,541.81 = 40,592.21/x
  3. Step 3: Cross multiply
    72,858.35x = 100,541.81 × 40,592.21
  4. Step 4: Simplify right side
    72,858.35x = 4,081,213,864.07
  5. Step 5: Solve for x
    x = 4,081,213,864.07/72,858.35
  6. Step 6: Final answer
    x = 56,015.74

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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.