Home / 78,909.45-108,897.40-43,100.06

Finding the Fourth Proportional to 78,909.45, 108,897.40 and 43,100.06

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Solution

The fourth proportional to 78,909.45, 108,897.40 and 43,100.06 is: 59,479.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,909.45 : 108,897.40 = 43,100.06 : x
  2. Step 2: Convert to fraction form
    78,909.45/108,897.40 = 43,100.06/x
  3. Step 3: Cross multiply
    78,909.45x = 108,897.40 × 43,100.06
  4. Step 4: Simplify right side
    78,909.45x = 4,693,484,258.34
  5. Step 5: Solve for x
    x = 4,693,484,258.34/78,909.45
  6. Step 6: Final answer
    x = 59,479.37

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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.