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Finding the Fourth Proportional to 65,370.32, 90,101.40 and 50,051.60

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Solution

The fourth proportional to 65,370.32, 90,101.40 and 50,051.60 is: 68,987.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,370.32 : 90,101.40 = 50,051.60 : x
  2. Step 2: Convert to fraction form
    65,370.32/90,101.40 = 50,051.60/x
  3. Step 3: Cross multiply
    65,370.32x = 90,101.40 × 50,051.60
  4. Step 4: Simplify right side
    65,370.32x = 4,509,719,232.24
  5. Step 5: Solve for x
    x = 4,509,719,232.24/65,370.32
  6. Step 6: Final answer
    x = 68,987.26

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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.