Home / 82,095.18-122,920.67-42,569.21

Finding the Fourth Proportional to 82,095.18, 122,920.67 and 42,569.21

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Solution

The fourth proportional to 82,095.18, 122,920.67 and 42,569.21 is: 63,738.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,095.18 : 122,920.67 = 42,569.21 : x
  2. Step 2: Convert to fraction form
    82,095.18/122,920.67 = 42,569.21/x
  3. Step 3: Cross multiply
    82,095.18x = 122,920.67 × 42,569.21
  4. Step 4: Simplify right side
    82,095.18x = 5,232,634,987.12
  5. Step 5: Solve for x
    x = 5,232,634,987.12/82,095.18
  6. Step 6: Final answer
    x = 63,738.64

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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.