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Finding the Fourth Proportional to 54,547.40, 81,821.10 and 53,235.20

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Solution

The fourth proportional to 54,547.40, 81,821.10 and 53,235.20 is: 79,852.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,547.40 : 81,821.10 = 53,235.20 : x
  2. Step 2: Convert to fraction form
    54,547.40/81,821.10 = 53,235.20/x
  3. Step 3: Cross multiply
    54,547.40x = 81,821.10 × 53,235.20
  4. Step 4: Simplify right side
    54,547.40x = 4,355,762,622.72
  5. Step 5: Solve for x
    x = 4,355,762,622.72/54,547.40
  6. Step 6: Final answer
    x = 79,852.80

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Similar ratio
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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.