Home / 78,915.38-108,870.98-58,268.36

Finding the Fourth Proportional to 78,915.38, 108,870.98 and 58,268.36

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Solution

The fourth proportional to 78,915.38, 108,870.98 and 58,268.36 is: 80,386.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,915.38 : 108,870.98 = 58,268.36 : x
  2. Step 2: Convert to fraction form
    78,915.38/108,870.98 = 58,268.36/x
  3. Step 3: Cross multiply
    78,915.38x = 108,870.98 × 58,268.36
  4. Step 4: Simplify right side
    78,915.38x = 6,343,732,911.84
  5. Step 5: Solve for x
    x = 6,343,732,911.84/78,915.38
  6. Step 6: Final answer
    x = 80,386.52

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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.