Home / 71,389.49-98,518.07-39,558.92

Finding the Fourth Proportional to 71,389.49, 98,518.07 and 39,558.92

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Solution

The fourth proportional to 71,389.49, 98,518.07 and 39,558.92 is: 54,591.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,389.49 : 98,518.07 = 39,558.92 : x
  2. Step 2: Convert to fraction form
    71,389.49/98,518.07 = 39,558.92/x
  3. Step 3: Cross multiply
    71,389.49x = 98,518.07 × 39,558.92
  4. Step 4: Simplify right side
    71,389.49x = 3,897,268,055.99
  5. Step 5: Solve for x
    x = 3,897,268,055.99/71,389.49
  6. Step 6: Final answer
    x = 54,591.63

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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.