Home / 65,313.07-90,140.37-38,458.07

Finding the Fourth Proportional to 65,313.07, 90,140.37 and 38,458.07

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Solution

The fourth proportional to 65,313.07, 90,140.37 and 38,458.07 is: 53,077.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,313.07 : 90,140.37 = 38,458.07 : x
  2. Step 2: Convert to fraction form
    65,313.07/90,140.37 = 38,458.07/x
  3. Step 3: Cross multiply
    65,313.07x = 90,140.37 × 38,458.07
  4. Step 4: Simplify right side
    65,313.07x = 3,466,624,208.58
  5. Step 5: Solve for x
    x = 3,466,624,208.58/65,313.07
  6. Step 6: Final answer
    x = 53,077.04

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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.