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Finding the Fourth Proportional to 43,702.90, 65,554.71 and 12,539.14

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Solution

The fourth proportional to 43,702.90, 65,554.71 and 12,539.14 is: 18,808.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,702.90 : 65,554.71 = 12,539.14 : x
  2. Step 2: Convert to fraction form
    43,702.90/65,554.71 = 12,539.14/x
  3. Step 3: Cross multiply
    43,702.90x = 65,554.71 × 12,539.14
  4. Step 4: Simplify right side
    43,702.90x = 821,999,686.35
  5. Step 5: Solve for x
    x = 821,999,686.35/43,702.90
  6. Step 6: Final answer
    x = 18,808.81

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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.