Home / 72,440.80-99,967.98-40,609.66

Finding the Fourth Proportional to 72,440.80, 99,967.98 and 40,609.66

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Solution

The fourth proportional to 72,440.80, 99,967.98 and 40,609.66 is: 56,041.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,440.80 : 99,967.98 = 40,609.66 : x
  2. Step 2: Convert to fraction form
    72,440.80/99,967.98 = 40,609.66/x
  3. Step 3: Cross multiply
    72,440.80x = 99,967.98 × 40,609.66
  4. Step 4: Simplify right side
    72,440.80x = 4,059,665,678.69
  5. Step 5: Solve for x
    x = 4,059,665,678.69/72,440.80
  6. Step 6: Final answer
    x = 56,041.15

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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.