Home / 66,977.19-100,465.79-31,810.23

Finding the Fourth Proportional to 66,977.19, 100,465.79 and 31,810.23

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Solution

The fourth proportional to 66,977.19, 100,465.79 and 31,810.23 is: 47,715.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,977.19 : 100,465.79 = 31,810.23 : x
  2. Step 2: Convert to fraction form
    66,977.19/100,465.79 = 31,810.23/x
  3. Step 3: Cross multiply
    66,977.19x = 100,465.79 × 31,810.23
  4. Step 4: Simplify right side
    66,977.19x = 3,195,839,727.98
  5. Step 5: Solve for x
    x = 3,195,839,727.98/66,977.19
  6. Step 6: Final answer
    x = 47,715.35

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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.