Home / 56,845.76-78,446.08-31,354.50

Finding the Fourth Proportional to 56,845.76, 78,446.08 and 31,354.50

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Solution

The fourth proportional to 56,845.76, 78,446.08 and 31,354.50 is: 43,268.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,845.76 : 78,446.08 = 31,354.50 : x
  2. Step 2: Convert to fraction form
    56,845.76/78,446.08 = 31,354.50/x
  3. Step 3: Cross multiply
    56,845.76x = 78,446.08 × 31,354.50
  4. Step 4: Simplify right side
    56,845.76x = 2,459,637,615.36
  5. Step 5: Solve for x
    x = 2,459,637,615.36/56,845.76
  6. Step 6: Final answer
    x = 43,268.62

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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.