Home / 72,556.88-100,123-40,719.63

Finding the Fourth Proportional to 72,556.88, 100,123 and 40,719.63

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Solution

The fourth proportional to 72,556.88, 100,123 and 40,719.63 is: 56,190.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,556.88 : 100,123 = 40,719.63 : x
  2. Step 2: Convert to fraction form
    72,556.88/100,123 = 40,719.63/x
  3. Step 3: Cross multiply
    72,556.88x = 100,123 × 40,719.63
  4. Step 4: Simplify right side
    72,556.88x = 4,076,971,514.49
  5. Step 5: Solve for x
    x = 4,076,971,514.49/72,556.88
  6. Step 6: Final answer
    x = 56,190.01

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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.