Home / 78,457.44-117,641.86-71,762.53

Finding the Fourth Proportional to 78,457.44, 117,641.86 and 71,762.53

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Solution

The fourth proportional to 78,457.44, 117,641.86 and 71,762.53 is: 107,603.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,457.44 : 117,641.86 = 71,762.53 : x
  2. Step 2: Convert to fraction form
    78,457.44/117,641.86 = 71,762.53/x
  3. Step 3: Cross multiply
    78,457.44x = 117,641.86 × 71,762.53
  4. Step 4: Simplify right side
    78,457.44x = 8,442,277,484.52
  5. Step 5: Solve for x
    x = 8,442,277,484.52/78,457.44
  6. Step 6: Final answer
    x = 107,603.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.