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Finding the Fourth Proportional to 55,295.76, 76,307.76 and 30,145.44

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Solution

The fourth proportional to 55,295.76, 76,307.76 and 30,145.44 is: 41,600.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,295.76 : 76,307.76 = 30,145.44 : x
  2. Step 2: Convert to fraction form
    55,295.76/76,307.76 = 30,145.44/x
  3. Step 3: Cross multiply
    55,295.76x = 76,307.76 × 30,145.44
  4. Step 4: Simplify right side
    55,295.76x = 2,300,331,000.61
  5. Step 5: Solve for x
    x = 2,300,331,000.61/55,295.76
  6. Step 6: Final answer
    x = 41,600.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.