Home / 78,385.02-117,617.73-38,403.24

Finding the Fourth Proportional to 78,385.02, 117,617.73 and 38,403.24

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Solution

The fourth proportional to 78,385.02, 117,617.73 and 38,403.24 is: 57,624.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,385.02 : 117,617.73 = 38,403.24 : x
  2. Step 2: Convert to fraction form
    78,385.02/117,617.73 = 38,403.24/x
  3. Step 3: Cross multiply
    78,385.02x = 117,617.73 × 38,403.24
  4. Step 4: Simplify right side
    78,385.02x = 4,516,901,913.45
  5. Step 5: Solve for x
    x = 4,516,901,913.45/78,385.02
  6. Step 6: Final answer
    x = 57,624.56

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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.