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Finding the Fourth Proportional to 78,649.52, 108,536.56 and 46,818.14

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Solution

The fourth proportional to 78,649.52, 108,536.56 and 46,818.14 is: 64,609.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,649.52 : 108,536.56 = 46,818.14 : x
  2. Step 2: Convert to fraction form
    78,649.52/108,536.56 = 46,818.14/x
  3. Step 3: Cross multiply
    78,649.52x = 108,536.56 × 46,818.14
  4. Step 4: Simplify right side
    78,649.52x = 5,081,479,201.47
  5. Step 5: Solve for x
    x = 5,081,479,201.47/78,649.52
  6. Step 6: Final answer
    x = 64,609.16

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1.5x scale

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.