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Finding the Fourth Proportional to 65,346.87, 98,033.07 and 20,970.21

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Solution

The fourth proportional to 65,346.87, 98,033.07 and 20,970.21 is: 31,459.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,346.87 : 98,033.07 = 20,970.21 : x
  2. Step 2: Convert to fraction form
    65,346.87/98,033.07 = 20,970.21/x
  3. Step 3: Cross multiply
    65,346.87x = 98,033.07 × 20,970.21
  4. Step 4: Simplify right side
    65,346.87x = 2,055,774,025.53
  5. Step 5: Solve for x
    x = 2,055,774,025.53/65,346.87
  6. Step 6: Final answer
    x = 31,459.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.