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Finding the Fourth Proportional to 140,712.79, 211,090.79 and 56,472.79

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Solution

The fourth proportional to 140,712.79, 211,090.79 and 56,472.79 is: 84,717.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,712.79 : 211,090.79 = 56,472.79 : x
  2. Step 2: Convert to fraction form
    140,712.79/211,090.79 = 56,472.79/x
  3. Step 3: Cross multiply
    140,712.79x = 211,090.79 × 56,472.79
  4. Step 4: Simplify right side
    140,712.79x = 11,920,885,854.60
  5. Step 5: Solve for x
    x = 11,920,885,854.60/140,712.79
  6. Step 6: Final answer
    x = 84,717.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.