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Finding the Fourth Proportional to 72,987.95, 100,706.14 and 41,150.70

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Solution

The fourth proportional to 72,987.95, 100,706.14 and 41,150.70 is: 56,778.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,987.95 : 100,706.14 = 41,150.70 : x
  2. Step 2: Convert to fraction form
    72,987.95/100,706.14 = 41,150.70/x
  3. Step 3: Cross multiply
    72,987.95x = 100,706.14 × 41,150.70
  4. Step 4: Simplify right side
    72,987.95x = 4,144,128,206.74
  5. Step 5: Solve for x
    x = 4,144,128,206.74/72,987.95
  6. Step 6: Final answer
    x = 56,778.25

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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.