Home / 40,406.11-55,812.99-30,787.36

Finding the Fourth Proportional to 40,406.11, 55,812.99 and 30,787.36

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Solution

The fourth proportional to 40,406.11, 55,812.99 and 30,787.36 is: 42,526.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,406.11 : 55,812.99 = 30,787.36 : x
  2. Step 2: Convert to fraction form
    40,406.11/55,812.99 = 30,787.36/x
  3. Step 3: Cross multiply
    40,406.11x = 55,812.99 × 30,787.36
  4. Step 4: Simplify right side
    40,406.11x = 1,718,334,615.81
  5. Step 5: Solve for x
    x = 1,718,334,615.81/40,406.11
  6. Step 6: Final answer
    x = 42,526.60

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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.