Home / 56,756.90-78,322.41-31,605.86

Finding the Fourth Proportional to 56,756.90, 78,322.41 and 31,605.86

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Solution

The fourth proportional to 56,756.90, 78,322.41 and 31,605.86 is: 43,614.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,756.90 : 78,322.41 = 31,605.86 : x
  2. Step 2: Convert to fraction form
    56,756.90/78,322.41 = 31,605.86/x
  3. Step 3: Cross multiply
    56,756.90x = 78,322.41 × 31,605.86
  4. Step 4: Simplify right side
    56,756.90x = 2,475,447,125.32
  5. Step 5: Solve for x
    x = 2,475,447,125.32/56,756.90
  6. Step 6: Final answer
    x = 43,614.91

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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.