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Finding the Fourth Proportional to 78,153.52, 107,844.80 and 46,317.28

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Solution

The fourth proportional to 78,153.52, 107,844.80 and 46,317.28 is: 63,913.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,153.52 : 107,844.80 = 46,317.28 : x
  2. Step 2: Convert to fraction form
    78,153.52/107,844.80 = 46,317.28/x
  3. Step 3: Cross multiply
    78,153.52x = 107,844.80 × 46,317.28
  4. Step 4: Simplify right side
    78,153.52x = 4,995,077,798.14
  5. Step 5: Solve for x
    x = 4,995,077,798.14/78,153.52
  6. Step 6: Final answer
    x = 63,913.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.