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Finding the Fourth Proportional to 71,018.94, 106,528.57 and 28,869.28

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Solution

The fourth proportional to 71,018.94, 106,528.57 and 28,869.28 is: 43,303.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,018.94 : 106,528.57 = 28,869.28 : x
  2. Step 2: Convert to fraction form
    71,018.94/106,528.57 = 28,869.28/x
  3. Step 3: Cross multiply
    71,018.94x = 106,528.57 × 28,869.28
  4. Step 4: Simplify right side
    71,018.94x = 3,075,402,776.83
  5. Step 5: Solve for x
    x = 3,075,402,776.83/71,018.94
  6. Step 6: Final answer
    x = 43,303.98

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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.