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Finding the Fourth Proportional to 79,186.04, 109,212 and 56,484.98

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Solution

The fourth proportional to 79,186.04, 109,212 and 56,484.98 is: 77,903.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,186.04 : 109,212 = 56,484.98 : x
  2. Step 2: Convert to fraction form
    79,186.04/109,212 = 56,484.98/x
  3. Step 3: Cross multiply
    79,186.04x = 109,212 × 56,484.98
  4. Step 4: Simplify right side
    79,186.04x = 6,168,837,635.76
  5. Step 5: Solve for x
    x = 6,168,837,635.76/79,186.04
  6. Step 6: Final answer
    x = 77,903.10

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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.