Home / 87,020.64-120,045.78-56,791.98

Finding the Fourth Proportional to 87,020.64, 120,045.78 and 56,791.98

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Solution

The fourth proportional to 87,020.64, 120,045.78 and 56,791.98 is: 78,345.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,020.64 : 120,045.78 = 56,791.98 : x
  2. Step 2: Convert to fraction form
    87,020.64/120,045.78 = 56,791.98/x
  3. Step 3: Cross multiply
    87,020.64x = 120,045.78 × 56,791.98
  4. Step 4: Simplify right side
    87,020.64x = 6,817,637,536.84
  5. Step 5: Solve for x
    x = 6,817,637,536.84/87,020.64
  6. Step 6: Final answer
    x = 78,345.06

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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.