Home / 56,779.76-78,365.40-31,637.36

Finding the Fourth Proportional to 56,779.76, 78,365.40 and 31,637.36

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Solution

The fourth proportional to 56,779.76, 78,365.40 and 31,637.36 is: 43,664.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,779.76 : 78,365.40 = 31,637.36 : x
  2. Step 2: Convert to fraction form
    56,779.76/78,365.40 = 31,637.36/x
  3. Step 3: Cross multiply
    56,779.76x = 78,365.40 × 31,637.36
  4. Step 4: Simplify right side
    56,779.76x = 2,479,274,371.34
  5. Step 5: Solve for x
    x = 2,479,274,371.34/56,779.76
  6. Step 6: Final answer
    x = 43,664.76

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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.