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Finding the Fourth Proportional to 60,867.80, 91,301.70 and 19,314.80

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Solution

The fourth proportional to 60,867.80, 91,301.70 and 19,314.80 is: 28,972.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,867.80 : 91,301.70 = 19,314.80 : x
  2. Step 2: Convert to fraction form
    60,867.80/91,301.70 = 19,314.80/x
  3. Step 3: Cross multiply
    60,867.80x = 91,301.70 × 19,314.80
  4. Step 4: Simplify right side
    60,867.80x = 1,763,474,075.16
  5. Step 5: Solve for x
    x = 1,763,474,075.16/60,867.80
  6. Step 6: Final answer
    x = 28,972.20

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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.