Home / 56,315.64-77,718-31,165.14

Finding the Fourth Proportional to 56,315.64, 77,718 and 31,165.14

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Solution

The fourth proportional to 56,315.64, 77,718 and 31,165.14 is: 43,009.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,315.64 : 77,718 = 31,165.14 : x
  2. Step 2: Convert to fraction form
    56,315.64/77,718 = 31,165.14/x
  3. Step 3: Cross multiply
    56,315.64x = 77,718 × 31,165.14
  4. Step 4: Simplify right side
    56,315.64x = 2,422,092,350.52
  5. Step 5: Solve for x
    x = 2,422,092,350.52/56,315.64
  6. Step 6: Final answer
    x = 43,009.23

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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.