Home / 78,685.06-108,583.98-42,875.38

Finding the Fourth Proportional to 78,685.06, 108,583.98 and 42,875.38

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Solution

The fourth proportional to 78,685.06, 108,583.98 and 42,875.38 is: 59,167.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,685.06 : 108,583.98 = 42,875.38 : x
  2. Step 2: Convert to fraction form
    78,685.06/108,583.98 = 42,875.38/x
  3. Step 3: Cross multiply
    78,685.06x = 108,583.98 × 42,875.38
  4. Step 4: Simplify right side
    78,685.06x = 4,655,579,404.41
  5. Step 5: Solve for x
    x = 4,655,579,404.41/78,685.06
  6. Step 6: Final answer
    x = 59,167.26

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.