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Finding the Fourth Proportional to 71,118.68, 98,146.76 and 40,904.01

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Solution

The fourth proportional to 71,118.68, 98,146.76 and 40,904.01 is: 56,449.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,118.68 : 98,146.76 = 40,904.01 : x
  2. Step 2: Convert to fraction form
    71,118.68/98,146.76 = 40,904.01/x
  3. Step 3: Cross multiply
    71,118.68x = 98,146.76 × 40,904.01
  4. Step 4: Simplify right side
    71,118.68x = 4,014,596,052.51
  5. Step 5: Solve for x
    x = 4,014,596,052.51/71,118.68
  6. Step 6: Final answer
    x = 56,449.25

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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.