Home / 56,943.58-85,386.70-18,979.40

Finding the Fourth Proportional to 56,943.58, 85,386.70 and 18,979.40

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Solution

The fourth proportional to 56,943.58, 85,386.70 and 18,979.40 is: 28,459.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,943.58 : 85,386.70 = 18,979.40 : x
  2. Step 2: Convert to fraction form
    56,943.58/85,386.70 = 18,979.40/x
  3. Step 3: Cross multiply
    56,943.58x = 85,386.70 × 18,979.40
  4. Step 4: Simplify right side
    56,943.58x = 1,620,588,464.41
  5. Step 5: Solve for x
    x = 1,620,588,464.41/56,943.58
  6. Step 6: Final answer
    x = 28,459.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.