Home / 56,905.88-78,535.34-31,416.80

Finding the Fourth Proportional to 56,905.88, 78,535.34 and 31,416.80

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Solution

The fourth proportional to 56,905.88, 78,535.34 and 31,416.80 is: 43,358.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,905.88 : 78,535.34 = 31,416.80 : x
  2. Step 2: Convert to fraction form
    56,905.88/78,535.34 = 31,416.80/x
  3. Step 3: Cross multiply
    56,905.88x = 78,535.34 × 31,416.80
  4. Step 4: Simplify right side
    56,905.88x = 2,467,329,069.71
  5. Step 5: Solve for x
    x = 2,467,329,069.71/56,905.88
  6. Step 6: Final answer
    x = 43,358.07

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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.