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Finding the Fourth Proportional to 65,296.45, 90,075.88 and 42,648.70

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Solution

The fourth proportional to 65,296.45, 90,075.88 and 42,648.70 is: 58,833.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,296.45 : 90,075.88 = 42,648.70 : x
  2. Step 2: Convert to fraction form
    65,296.45/90,075.88 = 42,648.70/x
  3. Step 3: Cross multiply
    65,296.45x = 90,075.88 × 42,648.70
  4. Step 4: Simplify right side
    65,296.45x = 3,841,619,183.36
  5. Step 5: Solve for x
    x = 3,841,619,183.36/65,296.45
  6. Step 6: Final answer
    x = 58,833.51

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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.