Home / 78,345.45-117,537.08-25,752.15

Finding the Fourth Proportional to 78,345.45, 117,537.08 and 25,752.15

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Solution

The fourth proportional to 78,345.45, 117,537.08 and 25,752.15 is: 38,634.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,345.45 : 117,537.08 = 25,752.15 : x
  2. Step 2: Convert to fraction form
    78,345.45/117,537.08 = 25,752.15/x
  3. Step 3: Cross multiply
    78,345.45x = 117,537.08 × 25,752.15
  4. Step 4: Simplify right side
    78,345.45x = 3,026,832,385.96
  5. Step 5: Solve for x
    x = 3,026,832,385.96/78,345.45
  6. Step 6: Final answer
    x = 38,634.44

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1.5x scale

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.