Home / 56,619-78,139.08-31,473.36

Finding the Fourth Proportional to 56,619, 78,139.08 and 31,473.36

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Solution

The fourth proportional to 56,619, 78,139.08 and 31,473.36 is: 43,435.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,619 : 78,139.08 = 31,473.36 : x
  2. Step 2: Convert to fraction form
    56,619/78,139.08 = 31,473.36/x
  3. Step 3: Cross multiply
    56,619x = 78,139.08 × 31,473.36
  4. Step 4: Simplify right side
    56,619x = 2,459,299,394.91
  5. Step 5: Solve for x
    x = 2,459,299,394.91/56,619
  6. Step 6: Final answer
    x = 43,435.94

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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.