Home / 286,070.55-429,109.07-86,392.59

Finding the Fourth Proportional to 286,070.55, 429,109.07 and 86,392.59

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Solution

The fourth proportional to 286,070.55, 429,109.07 and 86,392.59 is: 129,589.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,070.55 : 429,109.07 = 86,392.59 : x
  2. Step 2: Convert to fraction form
    286,070.55/429,109.07 = 86,392.59/x
  3. Step 3: Cross multiply
    286,070.55x = 429,109.07 × 86,392.59
  4. Step 4: Simplify right side
    286,070.55x = 37,071,843,517.83
  5. Step 5: Solve for x
    x = 37,071,843,517.83/286,070.55
  6. Step 6: Final answer
    x = 129,589.86

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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.