Home / 56,687.23-78,336.27-42,515.47

Finding the Fourth Proportional to 56,687.23, 78,336.27 and 42,515.47

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Solution

The fourth proportional to 56,687.23, 78,336.27 and 42,515.47 is: 58,752.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,687.23 : 78,336.27 = 42,515.47 : x
  2. Step 2: Convert to fraction form
    56,687.23/78,336.27 = 42,515.47/x
  3. Step 3: Cross multiply
    56,687.23x = 78,336.27 × 42,515.47
  4. Step 4: Simplify right side
    56,687.23x = 3,330,502,732.84
  5. Step 5: Solve for x
    x = 3,330,502,732.84/56,687.23
  6. Step 6: Final answer
    x = 58,752.26

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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.