Home / 56,602.85-78,112.64-31,111.99

Finding the Fourth Proportional to 56,602.85, 78,112.64 and 31,111.99

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Solution

The fourth proportional to 56,602.85, 78,112.64 and 31,111.99 is: 42,934.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,602.85 : 78,112.64 = 31,111.99 : x
  2. Step 2: Convert to fraction form
    56,602.85/78,112.64 = 31,111.99/x
  3. Step 3: Cross multiply
    56,602.85x = 78,112.64 × 31,111.99
  4. Step 4: Simplify right side
    56,602.85x = 2,430,239,557.05
  5. Step 5: Solve for x
    x = 2,430,239,557.05/56,602.85
  6. Step 6: Final answer
    x = 42,934.94

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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.