Home / 81,712.06-112,750.34-45,895.20

Finding the Fourth Proportional to 81,712.06, 112,750.34 and 45,895.20

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Solution

The fourth proportional to 81,712.06, 112,750.34 and 45,895.20 is: 63,328.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,712.06 : 112,750.34 = 45,895.20 : x
  2. Step 2: Convert to fraction form
    81,712.06/112,750.34 = 45,895.20/x
  3. Step 3: Cross multiply
    81,712.06x = 112,750.34 × 45,895.20
  4. Step 4: Simplify right side
    81,712.06x = 5,174,699,404.37
  5. Step 5: Solve for x
    x = 5,174,699,404.37/81,712.06
  6. Step 6: Final answer
    x = 63,328.47

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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.