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Finding the Fourth Proportional to 72,559.03, 100,131.51 and 40,733.32

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Solution

The fourth proportional to 72,559.03, 100,131.51 and 40,733.32 is: 56,212.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,559.03 : 100,131.51 = 40,733.32 : x
  2. Step 2: Convert to fraction form
    72,559.03/100,131.51 = 40,733.32/x
  3. Step 3: Cross multiply
    72,559.03x = 100,131.51 × 40,733.32
  4. Step 4: Simplify right side
    72,559.03x = 4,078,688,838.91
  5. Step 5: Solve for x
    x = 4,078,688,838.91/72,559.03
  6. Step 6: Final answer
    x = 56,212.01

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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.