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Finding the Fourth Proportional to 79,911.84, 119,888.52 and 65,703.74

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Solution

The fourth proportional to 79,911.84, 119,888.52 and 65,703.74 is: 98,572.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,911.84 : 119,888.52 = 65,703.74 : x
  2. Step 2: Convert to fraction form
    79,911.84/119,888.52 = 65,703.74/x
  3. Step 3: Cross multiply
    79,911.84x = 119,888.52 × 65,703.74
  4. Step 4: Simplify right side
    79,911.84x = 7,877,123,547.62
  5. Step 5: Solve for x
    x = 7,877,123,547.62/79,911.84
  6. Step 6: Final answer
    x = 98,572.67

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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.