Home / 56,611.89-78,123.54-31,117.71

Finding the Fourth Proportional to 56,611.89, 78,123.54 and 31,117.71

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Solution

The fourth proportional to 56,611.89, 78,123.54 and 31,117.71 is: 42,941.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,611.89 : 78,123.54 = 31,117.71 : x
  2. Step 2: Convert to fraction form
    56,611.89/78,123.54 = 31,117.71/x
  3. Step 3: Cross multiply
    56,611.89x = 78,123.54 × 31,117.71
  4. Step 4: Simplify right side
    56,611.89x = 2,431,025,539.14
  5. Step 5: Solve for x
    x = 2,431,025,539.14/56,611.89
  6. Step 6: Final answer
    x = 42,941.96

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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.