Home / 81,580.08-112,370.75-57,665.64

Finding the Fourth Proportional to 81,580.08, 112,370.75 and 57,665.64

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Solution

The fourth proportional to 81,580.08, 112,370.75 and 57,665.64 is: 79,430.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,580.08 : 112,370.75 = 57,665.64 : x
  2. Step 2: Convert to fraction form
    81,580.08/112,370.75 = 57,665.64/x
  3. Step 3: Cross multiply
    81,580.08x = 112,370.75 × 57,665.64
  4. Step 4: Simplify right side
    81,580.08x = 6,479,931,216.03
  5. Step 5: Solve for x
    x = 6,479,931,216.03/81,580.08
  6. Step 6: Final answer
    x = 79,430.31

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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.