Home / 105,651.64-145,799.82-57,905.40

Finding the Fourth Proportional to 105,651.64, 145,799.82 and 57,905.40

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Solution

The fourth proportional to 105,651.64, 145,799.82 and 57,905.40 is: 79,909.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,651.64 : 145,799.82 = 57,905.40 : x
  2. Step 2: Convert to fraction form
    105,651.64/145,799.82 = 57,905.40/x
  3. Step 3: Cross multiply
    105,651.64x = 145,799.82 × 57,905.40
  4. Step 4: Simplify right side
    105,651.64x = 8,442,596,897.03
  5. Step 5: Solve for x
    x = 8,442,596,897.03/105,651.64
  6. Step 6: Final answer
    x = 79,909.76

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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.