Home / 72,393.12-99,876.78-57,288.24

Finding the Fourth Proportional to 72,393.12, 99,876.78 and 57,288.24

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Solution

The fourth proportional to 72,393.12, 99,876.78 and 57,288.24 is: 79,037.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,393.12 : 99,876.78 = 57,288.24 : x
  2. Step 2: Convert to fraction form
    72,393.12/99,876.78 = 57,288.24/x
  3. Step 3: Cross multiply
    72,393.12x = 99,876.78 × 57,288.24
  4. Step 4: Simplify right side
    72,393.12x = 5,721,764,943.07
  5. Step 5: Solve for x
    x = 5,721,764,943.07/72,393.12
  6. Step 6: Final answer
    x = 79,037.41

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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.