Home / 287,975.04-431,904.24-77,563.80

Finding the Fourth Proportional to 287,975.04, 431,904.24 and 77,563.80

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Solution

The fourth proportional to 287,975.04, 431,904.24 and 77,563.80 is: 116,329.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,975.04 : 431,904.24 = 77,563.80 : x
  2. Step 2: Convert to fraction form
    287,975.04/431,904.24 = 77,563.80/x
  3. Step 3: Cross multiply
    287,975.04x = 431,904.24 × 77,563.80
  4. Step 4: Simplify right side
    287,975.04x = 33,500,134,090.51
  5. Step 5: Solve for x
    x = 33,500,134,090.51/287,975.04
  6. Step 6: Final answer
    x = 116,329.99

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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.