Home / 84,045.38-126,068.06-31,479.62

Finding the Fourth Proportional to 84,045.38, 126,068.06 and 31,479.62

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Solution

The fourth proportional to 84,045.38, 126,068.06 and 31,479.62 is: 47,219.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,045.38 : 126,068.06 = 31,479.62 : x
  2. Step 2: Convert to fraction form
    84,045.38/126,068.06 = 31,479.62/x
  3. Step 3: Cross multiply
    84,045.38x = 126,068.06 × 31,479.62
  4. Step 4: Simplify right side
    84,045.38x = 3,968,574,071.30
  5. Step 5: Solve for x
    x = 3,968,574,071.30/84,045.38
  6. Step 6: Final answer
    x = 47,219.42

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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.