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Finding the Fourth Proportional to 78,546.83, 117,838.47 and 25,953.12

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Solution

The fourth proportional to 78,546.83, 117,838.47 and 25,953.12 is: 38,935.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,546.83 : 117,838.47 = 25,953.12 : x
  2. Step 2: Convert to fraction form
    78,546.83/117,838.47 = 25,953.12/x
  3. Step 3: Cross multiply
    78,546.83x = 117,838.47 × 25,953.12
  4. Step 4: Simplify right side
    78,546.83x = 3,058,275,822.76
  5. Step 5: Solve for x
    x = 3,058,275,822.76/78,546.83
  6. Step 6: Final answer
    x = 38,935.70

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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.