Home / 86,975.16-119,972.64-57,506.80

Finding the Fourth Proportional to 86,975.16, 119,972.64 and 57,506.80

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Solution

The fourth proportional to 86,975.16, 119,972.64 and 57,506.80 is: 79,324.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,975.16 : 119,972.64 = 57,506.80 : x
  2. Step 2: Convert to fraction form
    86,975.16/119,972.64 = 57,506.80/x
  3. Step 3: Cross multiply
    86,975.16x = 119,972.64 × 57,506.80
  4. Step 4: Simplify right side
    86,975.16x = 6,899,242,613.95
  5. Step 5: Solve for x
    x = 6,899,242,613.95/86,975.16
  6. Step 6: Final answer
    x = 79,324.29

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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.