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Finding the Fourth Proportional to 44,102.88, 66,154.32 and 12,938.40

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Solution

The fourth proportional to 44,102.88, 66,154.32 and 12,938.40 is: 19,407.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,102.88 : 66,154.32 = 12,938.40 : x
  2. Step 2: Convert to fraction form
    44,102.88/66,154.32 = 12,938.40/x
  3. Step 3: Cross multiply
    44,102.88x = 66,154.32 × 12,938.40
  4. Step 4: Simplify right side
    44,102.88x = 855,931,053.89
  5. Step 5: Solve for x
    x = 855,931,053.89/44,102.88
  6. Step 6: Final answer
    x = 19,407.60

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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.