Home / 72,555.28-100,136.08-40,725.92

Finding the Fourth Proportional to 72,555.28, 100,136.08 and 40,725.92

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Solution

The fourth proportional to 72,555.28, 100,136.08 and 40,725.92 is: 56,207.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,555.28 : 100,136.08 = 40,725.92 : x
  2. Step 2: Convert to fraction form
    72,555.28/100,136.08 = 40,725.92/x
  3. Step 3: Cross multiply
    72,555.28x = 100,136.08 × 40,725.92
  4. Step 4: Simplify right side
    72,555.28x = 4,078,133,983.19
  5. Step 5: Solve for x
    x = 4,078,133,983.19/72,555.28
  6. Step 6: Final answer
    x = 56,207.27

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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.