Home / 78,913.07-108,899.91-43,103.08

Finding the Fourth Proportional to 78,913.07, 108,899.91 and 43,103.08

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Solution

The fourth proportional to 78,913.07, 108,899.91 and 43,103.08 is: 59,482.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,913.07 : 108,899.91 = 43,103.08 : x
  2. Step 2: Convert to fraction form
    78,913.07/108,899.91 = 43,103.08/x
  3. Step 3: Cross multiply
    78,913.07x = 108,899.91 × 43,103.08
  4. Step 4: Simplify right side
    78,913.07x = 4,693,921,579.11
  5. Step 5: Solve for x
    x = 4,693,921,579.11/78,913.07
  6. Step 6: Final answer
    x = 59,482.18

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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.