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Finding the Fourth Proportional to 54,539.60, 81,809.40 and 45,323.60

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Solution

The fourth proportional to 54,539.60, 81,809.40 and 45,323.60 is: 67,985.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,539.60 : 81,809.40 = 45,323.60 : x
  2. Step 2: Convert to fraction form
    54,539.60/81,809.40 = 45,323.60/x
  3. Step 3: Cross multiply
    54,539.60x = 81,809.40 × 45,323.60
  4. Step 4: Simplify right side
    54,539.60x = 3,707,896,521.84
  5. Step 5: Solve for x
    x = 3,707,896,521.84/54,539.60
  6. Step 6: Final answer
    x = 67,985.40

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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.