Home / 86,921.16-119,952.90-56,725.80

Finding the Fourth Proportional to 86,921.16, 119,952.90 and 56,725.80

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Solution

The fourth proportional to 86,921.16, 119,952.90 and 56,725.80 is: 78,282.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,921.16 : 119,952.90 = 56,725.80 : x
  2. Step 2: Convert to fraction form
    86,921.16/119,952.90 = 56,725.80/x
  3. Step 3: Cross multiply
    86,921.16x = 119,952.90 × 56,725.80
  4. Step 4: Simplify right side
    86,921.16x = 6,804,424,214.82
  5. Step 5: Solve for x
    x = 6,804,424,214.82/86,921.16
  6. Step 6: Final answer
    x = 78,282.71

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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.