Home / 65,960.48-91,020.88-39,101.60

Finding the Fourth Proportional to 65,960.48, 91,020.88 and 39,101.60

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Solution

The fourth proportional to 65,960.48, 91,020.88 and 39,101.60 is: 53,957.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,960.48 : 91,020.88 = 39,101.60 : x
  2. Step 2: Convert to fraction form
    65,960.48/91,020.88 = 39,101.60/x
  3. Step 3: Cross multiply
    65,960.48x = 91,020.88 × 39,101.60
  4. Step 4: Simplify right side
    65,960.48x = 3,559,062,041.41
  5. Step 5: Solve for x
    x = 3,559,062,041.41/65,960.48
  6. Step 6: Final answer
    x = 53,957.49

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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.