Home / 84,983.10-117,301.40-56,688.72

Finding the Fourth Proportional to 84,983.10, 117,301.40 and 56,688.72

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Solution

The fourth proportional to 84,983.10, 117,301.40 and 56,688.72 is: 78,246.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,983.10 : 117,301.40 = 56,688.72 : x
  2. Step 2: Convert to fraction form
    84,983.10/117,301.40 = 56,688.72/x
  3. Step 3: Cross multiply
    84,983.10x = 117,301.40 × 56,688.72
  4. Step 4: Simplify right side
    84,983.10x = 6,649,666,220.21
  5. Step 5: Solve for x
    x = 6,649,666,220.21/84,983.10
  6. Step 6: Final answer
    x = 78,246.92

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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.