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Finding the Fourth Proportional to 56,706.95, 78,254.97 and 31,212.77

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Solution

The fourth proportional to 56,706.95, 78,254.97 and 31,212.77 is: 43,073.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,706.95 : 78,254.97 = 31,212.77 : x
  2. Step 2: Convert to fraction form
    56,706.95/78,254.97 = 31,212.77/x
  3. Step 3: Cross multiply
    56,706.95x = 78,254.97 × 31,212.77
  4. Step 4: Simplify right side
    56,706.95x = 2,442,554,379.97
  5. Step 5: Solve for x
    x = 2,442,554,379.97/56,706.95
  6. Step 6: Final answer
    x = 43,073.28

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1.5x scale

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.