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Finding the Fourth Proportional to 84,870.98, 127,112.70 and 40,528.97

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Solution

The fourth proportional to 84,870.98, 127,112.70 and 40,528.97 is: 60,700.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,870.98 : 127,112.70 = 40,528.97 : x
  2. Step 2: Convert to fraction form
    84,870.98/127,112.70 = 40,528.97/x
  3. Step 3: Cross multiply
    84,870.98x = 127,112.70 × 40,528.97
  4. Step 4: Simplify right side
    84,870.98x = 5,151,746,804.92
  5. Step 5: Solve for x
    x = 5,151,746,804.92/84,870.98
  6. Step 6: Final answer
    x = 60,700.92

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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.