Home / 81,580.52-112,371.36-57,666.08

Finding the Fourth Proportional to 81,580.52, 112,371.36 and 57,666.08

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Solution

The fourth proportional to 81,580.52, 112,371.36 and 57,666.08 is: 79,430.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,580.52 : 112,371.36 = 57,666.08 : x
  2. Step 2: Convert to fraction form
    81,580.52/112,371.36 = 57,666.08/x
  3. Step 3: Cross multiply
    81,580.52x = 112,371.36 × 57,666.08
  4. Step 4: Simplify right side
    81,580.52x = 6,480,015,835.47
  5. Step 5: Solve for x
    x = 6,480,015,835.47/81,580.52
  6. Step 6: Final answer
    x = 79,430.92

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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.