Home / 56,281.85-77,669.11-31,131.35

Finding the Fourth Proportional to 56,281.85, 77,669.11 and 31,131.35

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Solution

The fourth proportional to 56,281.85, 77,669.11 and 31,131.35 is: 42,961.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,281.85 : 77,669.11 = 31,131.35 : x
  2. Step 2: Convert to fraction form
    56,281.85/77,669.11 = 31,131.35/x
  3. Step 3: Cross multiply
    56,281.85x = 77,669.11 × 31,131.35
  4. Step 4: Simplify right side
    56,281.85x = 2,417,944,247.60
  5. Step 5: Solve for x
    x = 2,417,944,247.60/56,281.85
  6. Step 6: Final answer
    x = 42,961.35

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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.