Home / 51,811.04-77,716.59-20,668.16

Finding the Fourth Proportional to 51,811.04, 77,716.59 and 20,668.16

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Solution

The fourth proportional to 51,811.04, 77,716.59 and 20,668.16 is: 31,002.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,811.04 : 77,716.59 = 20,668.16 : x
  2. Step 2: Convert to fraction form
    51,811.04/77,716.59 = 20,668.16/x
  3. Step 3: Cross multiply
    51,811.04x = 77,716.59 × 20,668.16
  4. Step 4: Simplify right side
    51,811.04x = 1,606,258,916.77
  5. Step 5: Solve for x
    x = 1,606,258,916.77/51,811.04
  6. Step 6: Final answer
    x = 31,002.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.