Home / 56,628.47-78,148.17-31,135.95

Finding the Fourth Proportional to 56,628.47, 78,148.17 and 31,135.95

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Solution

The fourth proportional to 56,628.47, 78,148.17 and 31,135.95 is: 42,968.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,628.47 : 78,148.17 = 31,135.95 : x
  2. Step 2: Convert to fraction form
    56,628.47/78,148.17 = 31,135.95/x
  3. Step 3: Cross multiply
    56,628.47x = 78,148.17 × 31,135.95
  4. Step 4: Simplify right side
    56,628.47x = 2,433,217,513.71
  5. Step 5: Solve for x
    x = 2,433,217,513.71/56,628.47
  6. Step 6: Final answer
    x = 42,968.09

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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.