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Finding the Fourth Proportional to 46,811.70, 70,217.55 and 18,745.20

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Solution

The fourth proportional to 46,811.70, 70,217.55 and 18,745.20 is: 28,117.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,811.70 : 70,217.55 = 18,745.20 : x
  2. Step 2: Convert to fraction form
    46,811.70/70,217.55 = 18,745.20/x
  3. Step 3: Cross multiply
    46,811.70x = 70,217.55 × 18,745.20
  4. Step 4: Simplify right side
    46,811.70x = 1,316,242,018.26
  5. Step 5: Solve for x
    x = 1,316,242,018.26/46,811.70
  6. Step 6: Final answer
    x = 28,117.80

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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.