Home / 56,135.68-84,139.86-18,686.95

Finding the Fourth Proportional to 56,135.68, 84,139.86 and 18,686.95

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Solution

The fourth proportional to 56,135.68, 84,139.86 and 18,686.95 is: 28,009.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,135.68 : 84,139.86 = 18,686.95 : x
  2. Step 2: Convert to fraction form
    56,135.68/84,139.86 = 18,686.95/x
  3. Step 3: Cross multiply
    56,135.68x = 84,139.86 × 18,686.95
  4. Step 4: Simplify right side
    56,135.68x = 1,572,317,356.83
  5. Step 5: Solve for x
    x = 1,572,317,356.83/56,135.68
  6. Step 6: Final answer
    x = 28,009.23

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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.