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Finding the Fourth Proportional to 78,417.66, 117,625.41 and 19,253.10

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Solution

The fourth proportional to 78,417.66, 117,625.41 and 19,253.10 is: 28,879.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,417.66 : 117,625.41 = 19,253.10 : x
  2. Step 2: Convert to fraction form
    78,417.66/117,625.41 = 19,253.10/x
  3. Step 3: Cross multiply
    78,417.66x = 117,625.41 × 19,253.10
  4. Step 4: Simplify right side
    78,417.66x = 2,264,653,781.27
  5. Step 5: Solve for x
    x = 2,264,653,781.27/78,417.66
  6. Step 6: Final answer
    x = 28,879.38

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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.