Home / 56,618.59-78,134.65-31,126.03

Finding the Fourth Proportional to 56,618.59, 78,134.65 and 31,126.03

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Solution

The fourth proportional to 56,618.59, 78,134.65 and 31,126.03 is: 42,954.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,618.59 : 78,134.65 = 31,126.03 : x
  2. Step 2: Convert to fraction form
    56,618.59/78,134.65 = 31,126.03/x
  3. Step 3: Cross multiply
    56,618.59x = 78,134.65 × 31,126.03
  4. Step 4: Simplify right side
    56,618.59x = 2,432,021,186.79
  5. Step 5: Solve for x
    x = 2,432,021,186.79/56,618.59
  6. Step 6: Final answer
    x = 42,954.47

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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.