Home / 92,781.26-128,142.45-62,513.58

Finding the Fourth Proportional to 92,781.26, 128,142.45 and 62,513.58

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Solution

The fourth proportional to 92,781.26, 128,142.45 and 62,513.58 is: 86,339.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,781.26 : 128,142.45 = 62,513.58 : x
  2. Step 2: Convert to fraction form
    92,781.26/128,142.45 = 62,513.58/x
  3. Step 3: Cross multiply
    92,781.26x = 128,142.45 × 62,513.58
  4. Step 4: Simplify right side
    92,781.26x = 8,010,643,299.47
  5. Step 5: Solve for x
    x = 8,010,643,299.47/92,781.26
  6. Step 6: Final answer
    x = 86,339.03

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1.5x scale

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.