Home / 78,312.12-108,122.76-46,491.24

Finding the Fourth Proportional to 78,312.12, 108,122.76 and 46,491.24

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Solution

The fourth proportional to 78,312.12, 108,122.76 and 46,491.24 is: 64,188.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,312.12 : 108,122.76 = 46,491.24 : x
  2. Step 2: Convert to fraction form
    78,312.12/108,122.76 = 46,491.24/x
  3. Step 3: Cross multiply
    78,312.12x = 108,122.76 × 46,491.24
  4. Step 4: Simplify right side
    78,312.12x = 5,026,761,184.62
  5. Step 5: Solve for x
    x = 5,026,761,184.62/78,312.12
  6. Step 6: Final answer
    x = 64,188.80

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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.