Home / 65,916.81-90,965.30-36,448.79

Finding the Fourth Proportional to 65,916.81, 90,965.30 and 36,448.79

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Solution

The fourth proportional to 65,916.81, 90,965.30 and 36,448.79 is: 50,299.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,916.81 : 90,965.30 = 36,448.79 : x
  2. Step 2: Convert to fraction form
    65,916.81/90,965.30 = 36,448.79/x
  3. Step 3: Cross multiply
    65,916.81x = 90,965.30 × 36,448.79
  4. Step 4: Simplify right side
    65,916.81x = 3,315,574,479.92
  5. Step 5: Solve for x
    x = 3,315,574,479.92/65,916.81
  6. Step 6: Final answer
    x = 50,299.38

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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.