Home / 56,866.43-78,478.40-31,711.07

Finding the Fourth Proportional to 56,866.43, 78,478.40 and 31,711.07

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Solution

The fourth proportional to 56,866.43, 78,478.40 and 31,711.07 is: 43,762.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,866.43 : 78,478.40 = 31,711.07 : x
  2. Step 2: Convert to fraction form
    56,866.43/78,478.40 = 31,711.07/x
  3. Step 3: Cross multiply
    56,866.43x = 78,478.40 × 31,711.07
  4. Step 4: Simplify right side
    56,866.43x = 2,488,634,035.89
  5. Step 5: Solve for x
    x = 2,488,634,035.89/56,866.43
  6. Step 6: Final answer
    x = 43,762.80

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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.