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Finding the Fourth Proportional to 79,913.80, 119,913.90 and 35,547.40

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Solution

The fourth proportional to 79,913.80, 119,913.90 and 35,547.40 is: 53,340.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,913.80 : 119,913.90 = 35,547.40 : x
  2. Step 2: Convert to fraction form
    79,913.80/119,913.90 = 35,547.40/x
  3. Step 3: Cross multiply
    79,913.80x = 119,913.90 × 35,547.40
  4. Step 4: Simplify right side
    79,913.80x = 4,262,627,368.86
  5. Step 5: Solve for x
    x = 4,262,627,368.86/79,913.80
  6. Step 6: Final answer
    x = 53,340.32

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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.