Home / 56,985.93-78,636.47-31,491.99

Finding the Fourth Proportional to 56,985.93, 78,636.47 and 31,491.99

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Solution

The fourth proportional to 56,985.93, 78,636.47 and 31,491.99 is: 43,456.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,985.93 : 78,636.47 = 31,491.99 : x
  2. Step 2: Convert to fraction form
    56,985.93/78,636.47 = 31,491.99/x
  3. Step 3: Cross multiply
    56,985.93x = 78,636.47 × 31,491.99
  4. Step 4: Simplify right side
    56,985.93x = 2,476,418,769.42
  5. Step 5: Solve for x
    x = 2,476,418,769.42/56,985.93
  6. Step 6: Final answer
    x = 43,456.67

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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.