Home / 85,731.77-118,314.08-51,739.71

Finding the Fourth Proportional to 85,731.77, 118,314.08 and 51,739.71

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Solution

The fourth proportional to 85,731.77, 118,314.08 and 51,739.71 is: 71,403.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,731.77 : 118,314.08 = 51,739.71 : x
  2. Step 2: Convert to fraction form
    85,731.77/118,314.08 = 51,739.71/x
  3. Step 3: Cross multiply
    85,731.77x = 118,314.08 × 51,739.71
  4. Step 4: Simplify right side
    85,731.77x = 6,121,535,929.42
  5. Step 5: Solve for x
    x = 6,121,535,929.42/85,731.77
  6. Step 6: Final answer
    x = 71,403.36

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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.