Home / 72,173.83-99,600.23-40,342.05

Finding the Fourth Proportional to 72,173.83, 99,600.23 and 40,342.05

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Solution

The fourth proportional to 72,173.83, 99,600.23 and 40,342.05 is: 55,672.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,173.83 : 99,600.23 = 40,342.05 : x
  2. Step 2: Convert to fraction form
    72,173.83/99,600.23 = 40,342.05/x
  3. Step 3: Cross multiply
    72,173.83x = 99,600.23 × 40,342.05
  4. Step 4: Simplify right side
    72,173.83x = 4,018,077,458.67
  5. Step 5: Solve for x
    x = 4,018,077,458.67/72,173.83
  6. Step 6: Final answer
    x = 55,672.22

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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.