Home / 78,053.02-107,713.95-42,243.79

Finding the Fourth Proportional to 78,053.02, 107,713.95 and 42,243.79

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Solution

The fourth proportional to 78,053.02, 107,713.95 and 42,243.79 is: 58,296.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,053.02 : 107,713.95 = 42,243.79 : x
  2. Step 2: Convert to fraction form
    78,053.02/107,713.95 = 42,243.79/x
  3. Step 3: Cross multiply
    78,053.02x = 107,713.95 × 42,243.79
  4. Step 4: Simplify right side
    78,053.02x = 4,550,245,483.87
  5. Step 5: Solve for x
    x = 4,550,245,483.87/78,053.02
  6. Step 6: Final answer
    x = 58,296.85

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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.