Home / 38,642.18-53,368.30-31,113.44

Finding the Fourth Proportional to 38,642.18, 53,368.30 and 31,113.44

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Solution

The fourth proportional to 38,642.18, 53,368.30 and 31,113.44 is: 42,970.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,642.18 : 53,368.30 = 31,113.44 : x
  2. Step 2: Convert to fraction form
    38,642.18/53,368.30 = 31,113.44/x
  3. Step 3: Cross multiply
    38,642.18x = 53,368.30 × 31,113.44
  4. Step 4: Simplify right side
    38,642.18x = 1,660,471,399.95
  5. Step 5: Solve for x
    x = 1,660,471,399.95/38,642.18
  6. Step 6: Final answer
    x = 42,970.44

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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.