Home / 42,419.80-63,629.70-40,000.60

Finding the Fourth Proportional to 42,419.80, 63,629.70 and 40,000.60

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Solution

The fourth proportional to 42,419.80, 63,629.70 and 40,000.60 is: 60,000.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,419.80 : 63,629.70 = 40,000.60 : x
  2. Step 2: Convert to fraction form
    42,419.80/63,629.70 = 40,000.60/x
  3. Step 3: Cross multiply
    42,419.80x = 63,629.70 × 40,000.60
  4. Step 4: Simplify right side
    42,419.80x = 2,545,226,177.82
  5. Step 5: Solve for x
    x = 2,545,226,177.82/42,419.80
  6. Step 6: Final answer
    x = 60,000.90

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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.