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Finding the Fourth Proportional to 84,681.45, 127,022.40 and 28,560.98

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Solution

The fourth proportional to 84,681.45, 127,022.40 and 28,560.98 is: 42,841.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,681.45 : 127,022.40 = 28,560.98 : x
  2. Step 2: Convert to fraction form
    84,681.45/127,022.40 = 28,560.98/x
  3. Step 3: Cross multiply
    84,681.45x = 127,022.40 × 28,560.98
  4. Step 4: Simplify right side
    84,681.45x = 3,627,884,083.15
  5. Step 5: Solve for x
    x = 3,627,884,083.15/84,681.45
  6. Step 6: Final answer
    x = 42,841.55

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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.