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Finding the Fourth Proportional to 74,086.95, 102,239.80 and 40,095.50

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Solution

The fourth proportional to 74,086.95, 102,239.80 and 40,095.50 is: 55,331.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,086.95 : 102,239.80 = 40,095.50 : x
  2. Step 2: Convert to fraction form
    74,086.95/102,239.80 = 40,095.50/x
  3. Step 3: Cross multiply
    74,086.95x = 102,239.80 × 40,095.50
  4. Step 4: Simplify right side
    74,086.95x = 4,099,356,056.26
  5. Step 5: Solve for x
    x = 4,099,356,056.26/74,086.95
  6. Step 6: Final answer
    x = 55,331.69

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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.