Home / 85,485.15-117,985.59-49,677.12

Finding the Fourth Proportional to 85,485.15, 117,985.59 and 49,677.12

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Solution

The fourth proportional to 85,485.15, 117,985.59 and 49,677.12 is: 68,563.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,485.15 : 117,985.59 = 49,677.12 : x
  2. Step 2: Convert to fraction form
    85,485.15/117,985.59 = 49,677.12/x
  3. Step 3: Cross multiply
    85,485.15x = 117,985.59 × 49,677.12
  4. Step 4: Simplify right side
    85,485.15x = 5,861,184,312.70
  5. Step 5: Solve for x
    x = 5,861,184,312.70/85,485.15
  6. Step 6: Final answer
    x = 68,563.77

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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.