Home / 102,005.46-153,029.79-31,890.06

Finding the Fourth Proportional to 102,005.46, 153,029.79 and 31,890.06

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Solution

The fourth proportional to 102,005.46, 153,029.79 and 31,890.06 is: 47,841.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,005.46 : 153,029.79 = 31,890.06 : x
  2. Step 2: Convert to fraction form
    102,005.46/153,029.79 = 31,890.06/x
  3. Step 3: Cross multiply
    102,005.46x = 153,029.79 × 31,890.06
  4. Step 4: Simplify right side
    102,005.46x = 4,880,129,184.89
  5. Step 5: Solve for x
    x = 4,880,129,184.89/102,005.46
  6. Step 6: Final answer
    x = 47,841.84

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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.