Home / 78,213.04-107,905.71-51,370.10

Finding the Fourth Proportional to 78,213.04, 107,905.71 and 51,370.10

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Solution

The fourth proportional to 78,213.04, 107,905.71 and 51,370.10 is: 70,872.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,213.04 : 107,905.71 = 51,370.10 : x
  2. Step 2: Convert to fraction form
    78,213.04/107,905.71 = 51,370.10/x
  3. Step 3: Cross multiply
    78,213.04x = 107,905.71 × 51,370.10
  4. Step 4: Simplify right side
    78,213.04x = 5,543,127,113.27
  5. Step 5: Solve for x
    x = 5,543,127,113.27/78,213.04
  6. Step 6: Final answer
    x = 70,872.16

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1.5x scale

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.