Home / 42,756.15-64,134.23-28,759.35

Finding the Fourth Proportional to 42,756.15, 64,134.23 and 28,759.35

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Solution

The fourth proportional to 42,756.15, 64,134.23 and 28,759.35 is: 43,139.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,756.15 : 64,134.23 = 28,759.35 : x
  2. Step 2: Convert to fraction form
    42,756.15/64,134.23 = 28,759.35/x
  3. Step 3: Cross multiply
    42,756.15x = 64,134.23 × 28,759.35
  4. Step 4: Simplify right side
    42,756.15x = 1,844,458,623.75
  5. Step 5: Solve for x
    x = 1,844,458,623.75/42,756.15
  6. Step 6: Final answer
    x = 43,139.03

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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.