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Finding the Fourth Proportional to 96,378.60, 144,384.30 and 51,990.60

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Solution

The fourth proportional to 96,378.60, 144,384.30 and 51,990.60 is: 77,886.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,378.60 : 144,384.30 = 51,990.60 : x
  2. Step 2: Convert to fraction form
    96,378.60/144,384.30 = 51,990.60/x
  3. Step 3: Cross multiply
    96,378.60x = 144,384.30 × 51,990.60
  4. Step 4: Simplify right side
    96,378.60x = 7,506,626,387.58
  5. Step 5: Solve for x
    x = 7,506,626,387.58/96,378.60
  6. Step 6: Final answer
    x = 77,886.86

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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.