Home / 78,877.56-108,851.36-43,068.36

Finding the Fourth Proportional to 78,877.56, 108,851.36 and 43,068.36

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Solution

The fourth proportional to 78,877.56, 108,851.36 and 43,068.36 is: 59,434.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,877.56 : 108,851.36 = 43,068.36 : x
  2. Step 2: Convert to fraction form
    78,877.56/108,851.36 = 43,068.36/x
  3. Step 3: Cross multiply
    78,877.56x = 108,851.36 × 43,068.36
  4. Step 4: Simplify right side
    78,877.56x = 4,688,049,558.97
  5. Step 5: Solve for x
    x = 4,688,049,558.97/78,877.56
  6. Step 6: Final answer
    x = 59,434.52

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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.