Home / 65,554.60-90,442.02-38,683.66

Finding the Fourth Proportional to 65,554.60, 90,442.02 and 38,683.66

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Solution

The fourth proportional to 65,554.60, 90,442.02 and 38,683.66 is: 53,369.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,554.60 : 90,442.02 = 38,683.66 : x
  2. Step 2: Convert to fraction form
    65,554.60/90,442.02 = 38,683.66/x
  3. Step 3: Cross multiply
    65,554.60x = 90,442.02 × 38,683.66
  4. Step 4: Simplify right side
    65,554.60x = 3,498,628,351.39
  5. Step 5: Solve for x
    x = 3,498,628,351.39/65,554.60
  6. Step 6: Final answer
    x = 53,369.68

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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.