Home / 57,979.20-86,968.80-39,547.20

Finding the Fourth Proportional to 57,979.20, 86,968.80 and 39,547.20

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Solution

The fourth proportional to 57,979.20, 86,968.80 and 39,547.20 is: 59,320.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,979.20 : 86,968.80 = 39,547.20 : x
  2. Step 2: Convert to fraction form
    57,979.20/86,968.80 = 39,547.20/x
  3. Step 3: Cross multiply
    57,979.20x = 86,968.80 × 39,547.20
  4. Step 4: Simplify right side
    57,979.20x = 3,439,372,527.36
  5. Step 5: Solve for x
    x = 3,439,372,527.36/57,979.20
  6. Step 6: Final answer
    x = 59,320.80

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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.