Home / 43,021.50-64,508.49-28,980.78

Finding the Fourth Proportional to 43,021.50, 64,508.49 and 28,980.78

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Solution

The fourth proportional to 43,021.50, 64,508.49 and 28,980.78 is: 43,455.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,021.50 : 64,508.49 = 28,980.78 : x
  2. Step 2: Convert to fraction form
    43,021.50/64,508.49 = 28,980.78/x
  3. Step 3: Cross multiply
    43,021.50x = 64,508.49 × 28,980.78
  4. Step 4: Simplify right side
    43,021.50x = 1,869,506,356.82
  5. Step 5: Solve for x
    x = 1,869,506,356.82/43,021.50
  6. Step 6: Final answer
    x = 43,455.16

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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.