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Finding the Fourth Proportional to 74,726.86, 112,147.80 and 55,798.78

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Solution

The fourth proportional to 74,726.86, 112,147.80 and 55,798.78 is: 83,741.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,726.86 : 112,147.80 = 55,798.78 : x
  2. Step 2: Convert to fraction form
    74,726.86/112,147.80 = 55,798.78/x
  3. Step 3: Cross multiply
    74,726.86x = 112,147.80 × 55,798.78
  4. Step 4: Simplify right side
    74,726.86x = 6,257,710,419.68
  5. Step 5: Solve for x
    x = 6,257,710,419.68/74,726.86
  6. Step 6: Final answer
    x = 83,741.11

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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.