Home / 72,556.02-100,121.80-40,718.76

Finding the Fourth Proportional to 72,556.02, 100,121.80 and 40,718.76

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Solution

The fourth proportional to 72,556.02, 100,121.80 and 40,718.76 is: 56,188.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,556.02 : 100,121.80 = 40,718.76 : x
  2. Step 2: Convert to fraction form
    72,556.02/100,121.80 = 40,718.76/x
  3. Step 3: Cross multiply
    72,556.02x = 100,121.80 × 40,718.76
  4. Step 4: Simplify right side
    72,556.02x = 4,076,835,544.97
  5. Step 5: Solve for x
    x = 4,076,835,544.97/72,556.02
  6. Step 6: Final answer
    x = 56,188.80

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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.