Home / 66,015.42-91,121.40-52,678.37

Finding the Fourth Proportional to 66,015.42, 91,121.40 and 52,678.37

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Solution

The fourth proportional to 66,015.42, 91,121.40 and 52,678.37 is: 72,712.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,015.42 : 91,121.40 = 52,678.37 : x
  2. Step 2: Convert to fraction form
    66,015.42/91,121.40 = 52,678.37/x
  3. Step 3: Cross multiply
    66,015.42x = 91,121.40 × 52,678.37
  4. Step 4: Simplify right side
    66,015.42x = 4,800,126,368.51
  5. Step 5: Solve for x
    x = 4,800,126,368.51/66,015.42
  6. Step 6: Final answer
    x = 72,712.20

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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.