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Finding the Fourth Proportional to 37,999.70, 56,999.55 and 14,307.20

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Solution

The fourth proportional to 37,999.70, 56,999.55 and 14,307.20 is: 21,460.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,999.70 : 56,999.55 = 14,307.20 : x
  2. Step 2: Convert to fraction form
    37,999.70/56,999.55 = 14,307.20/x
  3. Step 3: Cross multiply
    37,999.70x = 56,999.55 × 14,307.20
  4. Step 4: Simplify right side
    37,999.70x = 815,503,961.76
  5. Step 5: Solve for x
    x = 815,503,961.76/37,999.70
  6. Step 6: Final answer
    x = 21,460.80

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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.