Home / 75,051.24-103,655.75-51,136.40

Finding the Fourth Proportional to 75,051.24, 103,655.75 and 51,136.40

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Solution

The fourth proportional to 75,051.24, 103,655.75 and 51,136.40 is: 70,626.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,051.24 : 103,655.75 = 51,136.40 : x
  2. Step 2: Convert to fraction form
    75,051.24/103,655.75 = 51,136.40/x
  3. Step 3: Cross multiply
    75,051.24x = 103,655.75 × 51,136.40
  4. Step 4: Simplify right side
    75,051.24x = 5,300,581,120.34
  5. Step 5: Solve for x
    x = 5,300,581,120.34/75,051.24
  6. Step 6: Final answer
    x = 70,626.16

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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.