Home / 56,985.76-78,640.56-31,835.68

Finding the Fourth Proportional to 56,985.76, 78,640.56 and 31,835.68

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Solution

The fourth proportional to 56,985.76, 78,640.56 and 31,835.68 is: 43,933.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,985.76 : 78,640.56 = 31,835.68 : x
  2. Step 2: Convert to fraction form
    56,985.76/78,640.56 = 31,835.68/x
  3. Step 3: Cross multiply
    56,985.76x = 78,640.56 × 31,835.68
  4. Step 4: Simplify right side
    56,985.76x = 2,503,575,703.18
  5. Step 5: Solve for x
    x = 2,503,575,703.18/56,985.76
  6. Step 6: Final answer
    x = 43,933.36

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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.