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Finding the Fourth Proportional to 79,988.79, 120,018.19 and 37,898.93

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Solution

The fourth proportional to 79,988.79, 120,018.19 and 37,898.93 is: 56,864.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,988.79 : 120,018.19 = 37,898.93 : x
  2. Step 2: Convert to fraction form
    79,988.79/120,018.19 = 37,898.93/x
  3. Step 3: Cross multiply
    79,988.79x = 120,018.19 × 37,898.93
  4. Step 4: Simplify right side
    79,988.79x = 4,548,561,186.83
  5. Step 5: Solve for x
    x = 4,548,561,186.83/79,988.79
  6. Step 6: Final answer
    x = 56,864.98

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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.