Home / 84,009.07-126,013.59-28,605.07

Finding the Fourth Proportional to 84,009.07, 126,013.59 and 28,605.07

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Solution

The fourth proportional to 84,009.07, 126,013.59 and 28,605.07 is: 42,907.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,009.07 : 126,013.59 = 28,605.07 : x
  2. Step 2: Convert to fraction form
    84,009.07/126,013.59 = 28,605.07/x
  3. Step 3: Cross multiply
    84,009.07x = 126,013.59 × 28,605.07
  4. Step 4: Simplify right side
    84,009.07x = 3,604,627,562.90
  5. Step 5: Solve for x
    x = 3,604,627,562.90/84,009.07
  6. Step 6: Final answer
    x = 42,907.60

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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.