Home / 57,175.81-78,901.44-31,681.96

Finding the Fourth Proportional to 57,175.81, 78,901.44 and 31,681.96

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Solution

The fourth proportional to 57,175.81, 78,901.44 and 31,681.96 is: 43,720.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,175.81 : 78,901.44 = 31,681.96 : x
  2. Step 2: Convert to fraction form
    57,175.81/78,901.44 = 31,681.96/x
  3. Step 3: Cross multiply
    57,175.81x = 78,901.44 × 31,681.96
  4. Step 4: Simplify right side
    57,175.81x = 2,499,752,068.77
  5. Step 5: Solve for x
    x = 2,499,752,068.77/57,175.81
  6. Step 6: Final answer
    x = 43,720.45

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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.