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Finding the Fourth Proportional to 91,215.20, 125,841.20 and 52,968.20

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Solution

The fourth proportional to 91,215.20, 125,841.20 and 52,968.20 is: 73,075.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,215.20 : 125,841.20 = 52,968.20 : x
  2. Step 2: Convert to fraction form
    91,215.20/125,841.20 = 52,968.20/x
  3. Step 3: Cross multiply
    91,215.20x = 125,841.20 × 52,968.20
  4. Step 4: Simplify right side
    91,215.20x = 6,665,581,849.84
  5. Step 5: Solve for x
    x = 6,665,581,849.84/91,215.20
  6. Step 6: Final answer
    x = 73,075.34

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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.