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Finding the Fourth Proportional to 78,495.36, 117,703.68 and 36,339.27

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Solution

The fourth proportional to 78,495.36, 117,703.68 and 36,339.27 is: 54,490.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,495.36 : 117,703.68 = 36,339.27 : x
  2. Step 2: Convert to fraction form
    78,495.36/117,703.68 = 36,339.27/x
  3. Step 3: Cross multiply
    78,495.36x = 117,703.68 × 36,339.27
  4. Step 4: Simplify right side
    78,495.36x = 4,277,265,807.51
  5. Step 5: Solve for x
    x = 4,277,265,807.51/78,495.36
  6. Step 6: Final answer
    x = 54,490.68

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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.