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Finding the Fourth Proportional to 65,075.40, 97,728.30 and 50,320.20

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Solution

The fourth proportional to 65,075.40, 97,728.30 and 50,320.20 is: 75,569.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,075.40 : 97,728.30 = 50,320.20 : x
  2. Step 2: Convert to fraction form
    65,075.40/97,728.30 = 50,320.20/x
  3. Step 3: Cross multiply
    65,075.40x = 97,728.30 × 50,320.20
  4. Step 4: Simplify right side
    65,075.40x = 4,917,707,601.66
  5. Step 5: Solve for x
    x = 4,917,707,601.66/65,075.40
  6. Step 6: Final answer
    x = 75,569.38

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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.