Home / 72,045.48-99,424.26-40,215.72

Finding the Fourth Proportional to 72,045.48, 99,424.26 and 40,215.72

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Solution

The fourth proportional to 72,045.48, 99,424.26 and 40,215.72 is: 55,498.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,045.48 : 99,424.26 = 40,215.72 : x
  2. Step 2: Convert to fraction form
    72,045.48/99,424.26 = 40,215.72/x
  3. Step 3: Cross multiply
    72,045.48x = 99,424.26 × 40,215.72
  4. Step 4: Simplify right side
    72,045.48x = 3,998,418,201.37
  5. Step 5: Solve for x
    x = 3,998,418,201.37/72,045.48
  6. Step 6: Final answer
    x = 55,498.53

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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.