Home / 47,618.80-71,428.20-39,900.40

Finding the Fourth Proportional to 47,618.80, 71,428.20 and 39,900.40

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Solution

The fourth proportional to 47,618.80, 71,428.20 and 39,900.40 is: 59,850.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,618.80 : 71,428.20 = 39,900.40 : x
  2. Step 2: Convert to fraction form
    47,618.80/71,428.20 = 39,900.40/x
  3. Step 3: Cross multiply
    47,618.80x = 71,428.20 × 39,900.40
  4. Step 4: Simplify right side
    47,618.80x = 2,850,013,751.28
  5. Step 5: Solve for x
    x = 2,850,013,751.28/47,618.80
  6. Step 6: Final answer
    x = 59,850.60

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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.