Home / 56,680.97-78,225.26-42,315.87

Finding the Fourth Proportional to 56,680.97, 78,225.26 and 42,315.87

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Solution

The fourth proportional to 56,680.97, 78,225.26 and 42,315.87 is: 58,400.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,680.97 : 78,225.26 = 42,315.87 : x
  2. Step 2: Convert to fraction form
    56,680.97/78,225.26 = 42,315.87/x
  3. Step 3: Cross multiply
    56,680.97x = 78,225.26 × 42,315.87
  4. Step 4: Simplify right side
    56,680.97x = 3,310,169,721.30
  5. Step 5: Solve for x
    x = 3,310,169,721.30/56,680.97
  6. Step 6: Final answer
    x = 58,400.02

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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.