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Finding the Fourth Proportional to 72,498.94, 100,050.06 and 40,670.08

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Solution

The fourth proportional to 72,498.94, 100,050.06 and 40,670.08 is: 56,125.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,498.94 : 100,050.06 = 40,670.08 : x
  2. Step 2: Convert to fraction form
    72,498.94/100,050.06 = 40,670.08/x
  3. Step 3: Cross multiply
    72,498.94x = 100,050.06 × 40,670.08
  4. Step 4: Simplify right side
    72,498.94x = 4,069,043,944.20
  5. Step 5: Solve for x
    x = 4,069,043,944.20/72,498.94
  6. Step 6: Final answer
    x = 56,125.56

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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.