Home / 74,857.52-111,713.38-66,870.34

Finding the Fourth Proportional to 74,857.52, 111,713.38 and 66,870.34

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Solution

The fourth proportional to 74,857.52, 111,713.38 and 66,870.34 is: 99,793.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,857.52 : 111,713.38 = 66,870.34 : x
  2. Step 2: Convert to fraction form
    74,857.52/111,713.38 = 66,870.34/x
  3. Step 3: Cross multiply
    74,857.52x = 111,713.38 × 66,870.34
  4. Step 4: Simplify right side
    74,857.52x = 7,470,311,256.69
  5. Step 5: Solve for x
    x = 7,470,311,256.69/74,857.52
  6. Step 6: Final answer
    x = 99,793.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.