Home / 56,813.15-78,402.70-31,320.51

Finding the Fourth Proportional to 56,813.15, 78,402.70 and 31,320.51

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Solution

The fourth proportional to 56,813.15, 78,402.70 and 31,320.51 is: 43,222.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,813.15 : 78,402.70 = 31,320.51 : x
  2. Step 2: Convert to fraction form
    56,813.15/78,402.70 = 31,320.51/x
  3. Step 3: Cross multiply
    56,813.15x = 78,402.70 × 31,320.51
  4. Step 4: Simplify right side
    56,813.15x = 2,455,612,392.77
  5. Step 5: Solve for x
    x = 2,455,612,392.77/56,813.15
  6. Step 6: Final answer
    x = 43,222.61

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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.