Home / 54,019.10-81,101.55-42,938.30

Finding the Fourth Proportional to 54,019.10, 81,101.55 and 42,938.30

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Solution

The fourth proportional to 54,019.10, 81,101.55 and 42,938.30 is: 64,465.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,019.10 : 81,101.55 = 42,938.30 : x
  2. Step 2: Convert to fraction form
    54,019.10/81,101.55 = 42,938.30/x
  3. Step 3: Cross multiply
    54,019.10x = 81,101.55 × 42,938.30
  4. Step 4: Simplify right side
    54,019.10x = 3,482,362,684.37
  5. Step 5: Solve for x
    x = 3,482,362,684.37/54,019.10
  6. Step 6: Final answer
    x = 64,465.40

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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.