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Finding the Fourth Proportional to 79,284.32, 118,938.76 and 26,689.68

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Solution

The fourth proportional to 79,284.32, 118,938.76 and 26,689.68 is: 40,038.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,284.32 : 118,938.76 = 26,689.68 : x
  2. Step 2: Convert to fraction form
    79,284.32/118,938.76 = 26,689.68/x
  3. Step 3: Cross multiply
    79,284.32x = 118,938.76 × 26,689.68
  4. Step 4: Simplify right side
    79,284.32x = 3,174,437,444.00
  5. Step 5: Solve for x
    x = 3,174,437,444.00/79,284.32
  6. Step 6: Final answer
    x = 40,038.65

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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.