Home / 61,685.34-85,139.26-39,054.50

Finding the Fourth Proportional to 61,685.34, 85,139.26 and 39,054.50

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Solution

The fourth proportional to 61,685.34, 85,139.26 and 39,054.50 is: 53,903.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,685.34 : 85,139.26 = 39,054.50 : x
  2. Step 2: Convert to fraction form
    61,685.34/85,139.26 = 39,054.50/x
  3. Step 3: Cross multiply
    61,685.34x = 85,139.26 × 39,054.50
  4. Step 4: Simplify right side
    61,685.34x = 3,325,071,229.67
  5. Step 5: Solve for x
    x = 3,325,071,229.67/61,685.34
  6. Step 6: Final answer
    x = 53,903.75

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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.