Home / 71,318.07-98,417.43-39,485.07

Finding the Fourth Proportional to 71,318.07, 98,417.43 and 39,485.07

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Solution

The fourth proportional to 71,318.07, 98,417.43 and 39,485.07 is: 54,488.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,318.07 : 98,417.43 = 39,485.07 : x
  2. Step 2: Convert to fraction form
    71,318.07/98,417.43 = 39,485.07/x
  3. Step 3: Cross multiply
    71,318.07x = 98,417.43 × 39,485.07
  4. Step 4: Simplify right side
    71,318.07x = 3,886,019,112.77
  5. Step 5: Solve for x
    x = 3,886,019,112.77/71,318.07
  6. Step 6: Final answer
    x = 54,488.56

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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.