Home / 61,635.12-85,070.20-40,087.40

Finding the Fourth Proportional to 61,635.12, 85,070.20 and 40,087.40

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Solution

The fourth proportional to 61,635.12, 85,070.20 and 40,087.40 is: 55,329.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,635.12 : 85,070.20 = 40,087.40 : x
  2. Step 2: Convert to fraction form
    61,635.12/85,070.20 = 40,087.40/x
  3. Step 3: Cross multiply
    61,635.12x = 85,070.20 × 40,087.40
  4. Step 4: Simplify right side
    61,635.12x = 3,410,243,135.48
  5. Step 5: Solve for x
    x = 3,410,243,135.48/61,635.12
  6. Step 6: Final answer
    x = 55,329.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.