Home / 42,810.76-64,216.14-28,112.68

Finding the Fourth Proportional to 42,810.76, 64,216.14 and 28,112.68

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Solution

The fourth proportional to 42,810.76, 64,216.14 and 28,112.68 is: 42,169.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,810.76 : 64,216.14 = 28,112.68 : x
  2. Step 2: Convert to fraction form
    42,810.76/64,216.14 = 28,112.68/x
  3. Step 3: Cross multiply
    42,810.76x = 64,216.14 × 28,112.68
  4. Step 4: Simplify right side
    42,810.76x = 1,805,287,794.66
  5. Step 5: Solve for x
    x = 1,805,287,794.66/42,810.76
  6. Step 6: Final answer
    x = 42,169.02

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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.