Home / 47,939.52-66,111.84-31,166.40

Finding the Fourth Proportional to 47,939.52, 66,111.84 and 31,166.40

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Solution

The fourth proportional to 47,939.52, 66,111.84 and 31,166.40 is: 42,980.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,939.52 : 66,111.84 = 31,166.40 : x
  2. Step 2: Convert to fraction form
    47,939.52/66,111.84 = 31,166.40/x
  3. Step 3: Cross multiply
    47,939.52x = 66,111.84 × 31,166.40
  4. Step 4: Simplify right side
    47,939.52x = 2,060,468,050.18
  5. Step 5: Solve for x
    x = 2,060,468,050.18/47,939.52
  6. Step 6: Final answer
    x = 42,980.57

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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.