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Finding the Fourth Proportional to 40,409.49, 55,750 and 40,347.19

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Solution

The fourth proportional to 40,409.49, 55,750 and 40,347.19 is: 55,664.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,409.49 : 55,750 = 40,347.19 : x
  2. Step 2: Convert to fraction form
    40,409.49/55,750 = 40,347.19/x
  3. Step 3: Cross multiply
    40,409.49x = 55,750 × 40,347.19
  4. Step 4: Simplify right side
    40,409.49x = 2,249,355,842.50
  5. Step 5: Solve for x
    x = 2,249,355,842.50/40,409.49
  6. Step 6: Final answer
    x = 55,664.05

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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.