Home / 54,153.99-74,702.45-31,490.45

Finding the Fourth Proportional to 54,153.99, 74,702.45 and 31,490.45

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Solution

The fourth proportional to 54,153.99, 74,702.45 and 31,490.45 is: 43,439.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,153.99 : 74,702.45 = 31,490.45 : x
  2. Step 2: Convert to fraction form
    54,153.99/74,702.45 = 31,490.45/x
  3. Step 3: Cross multiply
    54,153.99x = 74,702.45 × 31,490.45
  4. Step 4: Simplify right side
    54,153.99x = 2,352,413,541.85
  5. Step 5: Solve for x
    x = 2,352,413,541.85/54,153.99
  6. Step 6: Final answer
    x = 43,439.34

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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.