Home / 72,840.72-100,525.29-40,577.91

Finding the Fourth Proportional to 72,840.72, 100,525.29 and 40,577.91

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Solution

The fourth proportional to 72,840.72, 100,525.29 and 40,577.91 is: 56,000.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,840.72 : 100,525.29 = 40,577.91 : x
  2. Step 2: Convert to fraction form
    72,840.72/100,525.29 = 40,577.91/x
  3. Step 3: Cross multiply
    72,840.72x = 100,525.29 × 40,577.91
  4. Step 4: Simplify right side
    72,840.72x = 4,079,106,170.34
  5. Step 5: Solve for x
    x = 4,079,106,170.34/72,840.72
  6. Step 6: Final answer
    x = 56,000.35

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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.