Home / 82,638.40-124,087.20-47,646.40

Finding the Fourth Proportional to 82,638.40, 124,087.20 and 47,646.40

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Solution

The fourth proportional to 82,638.40, 124,087.20 and 47,646.40 is: 71,544.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,638.40 : 124,087.20 = 47,646.40 : x
  2. Step 2: Convert to fraction form
    82,638.40/124,087.20 = 47,646.40/x
  3. Step 3: Cross multiply
    82,638.40x = 124,087.20 × 47,646.40
  4. Step 4: Simplify right side
    82,638.40x = 5,912,308,366.08
  5. Step 5: Solve for x
    x = 5,912,308,366.08/82,638.40
  6. Step 6: Final answer
    x = 71,544.32

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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.