Home / 56,579.45-78,079.73-31,428.95

Finding the Fourth Proportional to 56,579.45, 78,079.73 and 31,428.95

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Solution

The fourth proportional to 56,579.45, 78,079.73 and 31,428.95 is: 43,371.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,579.45 : 78,079.73 = 31,428.95 : x
  2. Step 2: Convert to fraction form
    56,579.45/78,079.73 = 31,428.95/x
  3. Step 3: Cross multiply
    56,579.45x = 78,079.73 × 31,428.95
  4. Step 4: Simplify right side
    56,579.45x = 2,453,963,382.64
  5. Step 5: Solve for x
    x = 2,453,963,382.64/56,579.45
  6. Step 6: Final answer
    x = 43,371.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.