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Finding the Fourth Proportional to 54,699.90, 82,017.45 and 28,455.90

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Solution

The fourth proportional to 54,699.90, 82,017.45 and 28,455.90 is: 42,666.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,699.90 : 82,017.45 = 28,455.90 : x
  2. Step 2: Convert to fraction form
    54,699.90/82,017.45 = 28,455.90/x
  3. Step 3: Cross multiply
    54,699.90x = 82,017.45 × 28,455.90
  4. Step 4: Simplify right side
    54,699.90x = 2,333,880,355.46
  5. Step 5: Solve for x
    x = 2,333,880,355.46/54,699.90
  6. Step 6: Final answer
    x = 42,666.99

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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.