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Finding the Fourth Proportional to 72,573.83, 100,151.81 and 40,742.79

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Solution

The fourth proportional to 72,573.83, 100,151.81 and 40,742.79 is: 56,225.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,573.83 : 100,151.81 = 40,742.79 : x
  2. Step 2: Convert to fraction form
    72,573.83/100,151.81 = 40,742.79/x
  3. Step 3: Cross multiply
    72,573.83x = 100,151.81 × 40,742.79
  4. Step 4: Simplify right side
    72,573.83x = 4,080,464,162.95
  5. Step 5: Solve for x
    x = 4,080,464,162.95/72,573.83
  6. Step 6: Final answer
    x = 56,225.01

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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.