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Finding the Fourth Proportional to 79,270.64, 109,330.88 and 70,205.52

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Solution

The fourth proportional to 79,270.64, 109,330.88 and 70,205.52 is: 96,828.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,270.64 : 109,330.88 = 70,205.52 : x
  2. Step 2: Convert to fraction form
    79,270.64/109,330.88 = 70,205.52/x
  3. Step 3: Cross multiply
    79,270.64x = 109,330.88 × 70,205.52
  4. Step 4: Simplify right side
    79,270.64x = 7,675,631,282.46
  5. Step 5: Solve for x
    x = 7,675,631,282.46/79,270.64
  6. Step 6: Final answer
    x = 96,828.17

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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.