Home / 43,435.53-65,478.78-40,542.20

Finding the Fourth Proportional to 43,435.53, 65,478.78 and 40,542.20

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Solution

The fourth proportional to 43,435.53, 65,478.78 and 40,542.20 is: 61,117.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,435.53 : 65,478.78 = 40,542.20 : x
  2. Step 2: Convert to fraction form
    43,435.53/65,478.78 = 40,542.20/x
  3. Step 3: Cross multiply
    43,435.53x = 65,478.78 × 40,542.20
  4. Step 4: Simplify right side
    43,435.53x = 2,654,653,528.51
  5. Step 5: Solve for x
    x = 2,654,653,528.51/43,435.53
  6. Step 6: Final answer
    x = 61,117.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.