Home / 56,368.40-77,788.36-31,217.88

Finding the Fourth Proportional to 56,368.40, 77,788.36 and 31,217.88

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Solution

The fourth proportional to 56,368.40, 77,788.36 and 31,217.88 is: 43,080.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,368.40 : 77,788.36 = 31,217.88 : x
  2. Step 2: Convert to fraction form
    56,368.40/77,788.36 = 31,217.88/x
  3. Step 3: Cross multiply
    56,368.40x = 77,788.36 × 31,217.88
  4. Step 4: Simplify right side
    56,368.40x = 2,428,387,687.88
  5. Step 5: Solve for x
    x = 2,428,387,687.88/56,368.40
  6. Step 6: Final answer
    x = 43,080.66

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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.