Home / 71,211-106,746.63-39,636.18

Finding the Fourth Proportional to 71,211, 106,746.63 and 39,636.18

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Solution

The fourth proportional to 71,211, 106,746.63 and 39,636.18 is: 59,415.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,211 : 106,746.63 = 39,636.18 : x
  2. Step 2: Convert to fraction form
    71,211/106,746.63 = 39,636.18/x
  3. Step 3: Cross multiply
    71,211x = 106,746.63 × 39,636.18
  4. Step 4: Simplify right side
    71,211x = 4,231,028,641.07
  5. Step 5: Solve for x
    x = 4,231,028,641.07/71,211
  6. Step 6: Final answer
    x = 59,415.38

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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.