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Finding the Fourth Proportional to 71,097.84, 98,110.98 and 40,878.36

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Solution

The fourth proportional to 71,097.84, 98,110.98 and 40,878.36 is: 56,409.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,097.84 : 98,110.98 = 40,878.36 : x
  2. Step 2: Convert to fraction form
    71,097.84/98,110.98 = 40,878.36/x
  3. Step 3: Cross multiply
    71,097.84x = 98,110.98 × 40,878.36
  4. Step 4: Simplify right side
    71,097.84x = 4,010,615,960.39
  5. Step 5: Solve for x
    x = 4,010,615,960.39/71,097.84
  6. Step 6: Final answer
    x = 56,409.81

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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.