Home / 42,419.40-63,629.10-38,531.40

Finding the Fourth Proportional to 42,419.40, 63,629.10 and 38,531.40

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Solution

The fourth proportional to 42,419.40, 63,629.10 and 38,531.40 is: 57,797.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,419.40 : 63,629.10 = 38,531.40 : x
  2. Step 2: Convert to fraction form
    42,419.40/63,629.10 = 38,531.40/x
  3. Step 3: Cross multiply
    42,419.40x = 63,629.10 × 38,531.40
  4. Step 4: Simplify right side
    42,419.40x = 2,451,718,303.74
  5. Step 5: Solve for x
    x = 2,451,718,303.74/42,419.40
  6. Step 6: Final answer
    x = 57,797.10

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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.