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Finding the Fourth Proportional to 65,266.67, 90,075.93 and 38,407.88

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Solution

The fourth proportional to 65,266.67, 90,075.93 and 38,407.88 is: 53,007.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,266.67 : 90,075.93 = 38,407.88 : x
  2. Step 2: Convert to fraction form
    65,266.67/90,075.93 = 38,407.88/x
  3. Step 3: Cross multiply
    65,266.67x = 90,075.93 × 38,407.88
  4. Step 4: Simplify right side
    65,266.67x = 3,459,625,510.33
  5. Step 5: Solve for x
    x = 3,459,625,510.33/65,266.67
  6. Step 6: Final answer
    x = 53,007.54

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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.