Home / 57,156.79-78,875.51-31,663.08

Finding the Fourth Proportional to 57,156.79, 78,875.51 and 31,663.08

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Solution

The fourth proportional to 57,156.79, 78,875.51 and 31,663.08 is: 43,694.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,156.79 : 78,875.51 = 31,663.08 : x
  2. Step 2: Convert to fraction form
    57,156.79/78,875.51 = 31,663.08/x
  3. Step 3: Cross multiply
    57,156.79x = 78,875.51 × 31,663.08
  4. Step 4: Simplify right side
    57,156.79x = 2,497,441,583.17
  5. Step 5: Solve for x
    x = 2,497,441,583.17/57,156.79
  6. Step 6: Final answer
    x = 43,694.57

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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.