Home / 97,877.71-135,068.94-57,039.22

Finding the Fourth Proportional to 97,877.71, 135,068.94 and 57,039.22

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Solution

The fourth proportional to 97,877.71, 135,068.94 and 57,039.22 is: 78,712.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,877.71 : 135,068.94 = 57,039.22 : x
  2. Step 2: Convert to fraction form
    97,877.71/135,068.94 = 57,039.22/x
  3. Step 3: Cross multiply
    97,877.71x = 135,068.94 × 57,039.22
  4. Step 4: Simplify right side
    97,877.71x = 7,704,226,983.83
  5. Step 5: Solve for x
    x = 7,704,226,983.83/97,877.71
  6. Step 6: Final answer
    x = 78,712.78

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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.