Home / 56,765.08-78,239.82-38,829.16

Finding the Fourth Proportional to 56,765.08, 78,239.82 and 38,829.16

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Solution

The fourth proportional to 56,765.08, 78,239.82 and 38,829.16 is: 53,518.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,765.08 : 78,239.82 = 38,829.16 : x
  2. Step 2: Convert to fraction form
    56,765.08/78,239.82 = 38,829.16/x
  3. Step 3: Cross multiply
    56,765.08x = 78,239.82 × 38,829.16
  4. Step 4: Simplify right side
    56,765.08x = 3,037,986,489.15
  5. Step 5: Solve for x
    x = 3,037,986,489.15/56,765.08
  6. Step 6: Final answer
    x = 53,518.58

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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.