Home / 66,731.19-92,079.93-39,867.99

Finding the Fourth Proportional to 66,731.19, 92,079.93 and 39,867.99

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Solution

The fourth proportional to 66,731.19, 92,079.93 and 39,867.99 is: 55,012.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,731.19 : 92,079.93 = 39,867.99 : x
  2. Step 2: Convert to fraction form
    66,731.19/92,079.93 = 39,867.99/x
  3. Step 3: Cross multiply
    66,731.19x = 92,079.93 × 39,867.99
  4. Step 4: Simplify right side
    66,731.19x = 3,671,041,728.44
  5. Step 5: Solve for x
    x = 3,671,041,728.44/66,731.19
  6. Step 6: Final answer
    x = 55,012.38

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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.