Home / 78,877.09-108,852.65-43,069.38

Finding the Fourth Proportional to 78,877.09, 108,852.65 and 43,069.38

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Solution

The fourth proportional to 78,877.09, 108,852.65 and 43,069.38 is: 59,436.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,877.09 : 108,852.65 = 43,069.38 : x
  2. Step 2: Convert to fraction form
    78,877.09/108,852.65 = 43,069.38/x
  3. Step 3: Cross multiply
    78,877.09x = 108,852.65 × 43,069.38
  4. Step 4: Simplify right side
    78,877.09x = 4,688,216,146.86
  5. Step 5: Solve for x
    x = 4,688,216,146.86/78,877.09
  6. Step 6: Final answer
    x = 59,436.98

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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.