Home / 78,470.93-108,292.02-42,663.35

Finding the Fourth Proportional to 78,470.93, 108,292.02 and 42,663.35

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Solution

The fourth proportional to 78,470.93, 108,292.02 and 42,663.35 is: 58,876.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,470.93 : 108,292.02 = 42,663.35 : x
  2. Step 2: Convert to fraction form
    78,470.93/108,292.02 = 42,663.35/x
  3. Step 3: Cross multiply
    78,470.93x = 108,292.02 × 42,663.35
  4. Step 4: Simplify right side
    78,470.93x = 4,620,100,351.47
  5. Step 5: Solve for x
    x = 4,620,100,351.47/78,470.93
  6. Step 6: Final answer
    x = 58,876.58

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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.