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Finding the Fourth Proportional to 54,153.60, 81,230.40 and 51,820.80

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Solution

The fourth proportional to 54,153.60, 81,230.40 and 51,820.80 is: 77,731.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,153.60 : 81,230.40 = 51,820.80 : x
  2. Step 2: Convert to fraction form
    54,153.60/81,230.40 = 51,820.80/x
  3. Step 3: Cross multiply
    54,153.60x = 81,230.40 × 51,820.80
  4. Step 4: Simplify right side
    54,153.60x = 4,209,424,312.32
  5. Step 5: Solve for x
    x = 4,209,424,312.32/54,153.60
  6. Step 6: Final answer
    x = 77,731.20

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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.