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Finding the Fourth Proportional to 90,644.61, 125,075.70 and 50,354.67

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Solution

The fourth proportional to 90,644.61, 125,075.70 and 50,354.67 is: 69,481.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,644.61 : 125,075.70 = 50,354.67 : x
  2. Step 2: Convert to fraction form
    90,644.61/125,075.70 = 50,354.67/x
  3. Step 3: Cross multiply
    90,644.61x = 125,075.70 × 50,354.67
  4. Step 4: Simplify right side
    90,644.61x = 6,298,145,598.52
  5. Step 5: Solve for x
    x = 6,298,145,598.52/90,644.61
  6. Step 6: Final answer
    x = 69,481.74

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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.