Home / 78,865.06-118,199.14-39,433.45

Finding the Fourth Proportional to 78,865.06, 118,199.14 and 39,433.45

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Solution

The fourth proportional to 78,865.06, 118,199.14 and 39,433.45 is: 59,100.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,865.06 : 118,199.14 = 39,433.45 : x
  2. Step 2: Convert to fraction form
    78,865.06/118,199.14 = 39,433.45/x
  3. Step 3: Cross multiply
    78,865.06x = 118,199.14 × 39,433.45
  4. Step 4: Simplify right side
    78,865.06x = 4,660,999,877.23
  5. Step 5: Solve for x
    x = 4,660,999,877.23/78,865.06
  6. Step 6: Final answer
    x = 59,100.95

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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.