Home / 78,474.18-108,296.49-42,666.66

Finding the Fourth Proportional to 78,474.18, 108,296.49 and 42,666.66

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Solution

The fourth proportional to 78,474.18, 108,296.49 and 42,666.66 is: 58,881.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,474.18 : 108,296.49 = 42,666.66 : x
  2. Step 2: Convert to fraction form
    78,474.18/108,296.49 = 42,666.66/x
  3. Step 3: Cross multiply
    78,474.18x = 108,296.49 × 42,666.66
  4. Step 4: Simplify right side
    78,474.18x = 4,620,649,518.02
  5. Step 5: Solve for x
    x = 4,620,649,518.02/78,474.18
  6. Step 6: Final answer
    x = 58,881.14

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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.