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Finding the Fourth Proportional to 55,358, 76,393.78 and 30,207.52

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Solution

The fourth proportional to 55,358, 76,393.78 and 30,207.52 is: 41,686.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,358 : 76,393.78 = 30,207.52 : x
  2. Step 2: Convert to fraction form
    55,358/76,393.78 = 30,207.52/x
  3. Step 3: Cross multiply
    55,358x = 76,393.78 × 30,207.52
  4. Step 4: Simplify right side
    55,358x = 2,307,666,637.23
  5. Step 5: Solve for x
    x = 2,307,666,637.23/55,358
  6. Step 6: Final answer
    x = 41,686.24

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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.