Home / 72,231.06-99,679.13-40,397.93

Finding the Fourth Proportional to 72,231.06, 99,679.13 and 40,397.93

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Solution

The fourth proportional to 72,231.06, 99,679.13 and 40,397.93 is: 55,749.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,231.06 : 99,679.13 = 40,397.93 : x
  2. Step 2: Convert to fraction form
    72,231.06/99,679.13 = 40,397.93/x
  3. Step 3: Cross multiply
    72,231.06x = 99,679.13 × 40,397.93
  4. Step 4: Simplify right side
    72,231.06x = 4,026,830,516.20
  5. Step 5: Solve for x
    x = 4,026,830,516.20/72,231.06
  6. Step 6: Final answer
    x = 55,749.29

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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.