Home / 65,436.12-98,140.68-18,678.60

Finding the Fourth Proportional to 65,436.12, 98,140.68 and 18,678.60

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Solution

The fourth proportional to 65,436.12, 98,140.68 and 18,678.60 is: 28,014.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,436.12 : 98,140.68 = 18,678.60 : x
  2. Step 2: Convert to fraction form
    65,436.12/98,140.68 = 18,678.60/x
  3. Step 3: Cross multiply
    65,436.12x = 98,140.68 × 18,678.60
  4. Step 4: Simplify right side
    65,436.12x = 1,833,130,505.45
  5. Step 5: Solve for x
    x = 1,833,130,505.45/65,436.12
  6. Step 6: Final answer
    x = 28,014.05

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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.