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Finding the Fourth Proportional to 78,890.24, 118,328.88 and 23,486.24

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Solution

The fourth proportional to 78,890.24, 118,328.88 and 23,486.24 is: 35,227.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,890.24 : 118,328.88 = 23,486.24 : x
  2. Step 2: Convert to fraction form
    78,890.24/118,328.88 = 23,486.24/x
  3. Step 3: Cross multiply
    78,890.24x = 118,328.88 × 23,486.24
  4. Step 4: Simplify right side
    78,890.24x = 2,779,100,474.61
  5. Step 5: Solve for x
    x = 2,779,100,474.61/78,890.24
  6. Step 6: Final answer
    x = 35,227.43

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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.