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Finding the Fourth Proportional to 65,295.96, 90,075.25 and 42,648.21

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Solution

The fourth proportional to 65,295.96, 90,075.25 and 42,648.21 is: 58,832.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,295.96 : 90,075.25 = 42,648.21 : x
  2. Step 2: Convert to fraction form
    65,295.96/90,075.25 = 42,648.21/x
  3. Step 3: Cross multiply
    65,295.96x = 90,075.25 × 42,648.21
  4. Step 4: Simplify right side
    65,295.96x = 3,841,548,177.80
  5. Step 5: Solve for x
    x = 3,841,548,177.80/65,295.96
  6. Step 6: Final answer
    x = 58,832.86

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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.