Home / 85,288.28-117,746.01-56,657.03

Finding the Fourth Proportional to 85,288.28, 117,746.01 and 56,657.03

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Solution

The fourth proportional to 85,288.28, 117,746.01 and 56,657.03 is: 78,218.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,288.28 : 117,746.01 = 56,657.03 : x
  2. Step 2: Convert to fraction form
    85,288.28/117,746.01 = 56,657.03/x
  3. Step 3: Cross multiply
    85,288.28x = 117,746.01 × 56,657.03
  4. Step 4: Simplify right side
    85,288.28x = 6,671,138,632.22
  5. Step 5: Solve for x
    x = 6,671,138,632.22/85,288.28
  6. Step 6: Final answer
    x = 78,218.71

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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.