Home / 51,128.51-70,560.25-30,716.81

Finding the Fourth Proportional to 51,128.51, 70,560.25 and 30,716.81

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Solution

The fourth proportional to 51,128.51, 70,560.25 and 30,716.81 is: 42,390.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,128.51 : 70,560.25 = 30,716.81 : x
  2. Step 2: Convert to fraction form
    51,128.51/70,560.25 = 30,716.81/x
  3. Step 3: Cross multiply
    51,128.51x = 70,560.25 × 30,716.81
  4. Step 4: Simplify right side
    51,128.51x = 2,167,385,639.22
  5. Step 5: Solve for x
    x = 2,167,385,639.22/51,128.51
  6. Step 6: Final answer
    x = 42,390.94

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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.