Home / 56,703.12-78,247.26-31,551

Finding the Fourth Proportional to 56,703.12, 78,247.26 and 31,551

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Solution

The fourth proportional to 56,703.12, 78,247.26 and 31,551 is: 43,538.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,703.12 : 78,247.26 = 31,551 : x
  2. Step 2: Convert to fraction form
    56,703.12/78,247.26 = 31,551/x
  3. Step 3: Cross multiply
    56,703.12x = 78,247.26 × 31,551
  4. Step 4: Simplify right side
    56,703.12x = 2,468,779,300.26
  5. Step 5: Solve for x
    x = 2,468,779,300.26/56,703.12
  6. Step 6: Final answer
    x = 43,538.69

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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.