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Finding the Fourth Proportional to 72,430.95, 108,649.79 and 37,438.95

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Solution

The fourth proportional to 72,430.95, 108,649.79 and 37,438.95 is: 56,160.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,430.95 : 108,649.79 = 37,438.95 : x
  2. Step 2: Convert to fraction form
    72,430.95/108,649.79 = 37,438.95/x
  3. Step 3: Cross multiply
    72,430.95x = 108,649.79 × 37,438.95
  4. Step 4: Simplify right side
    72,430.95x = 4,067,734,055.32
  5. Step 5: Solve for x
    x = 4,067,734,055.32/72,430.95
  6. Step 6: Final answer
    x = 56,160.16

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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.