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Finding the Fourth Proportional to 98,643,592.80, 147,965,389.20 and 53,293,960.80

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Solution

The fourth proportional to 98,643,592.80, 147,965,389.20 and 53,293,960.80 is: 79,940,941.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,643,592.80 : 147,965,389.20 = 53,293,960.80 : x
  2. Step 2: Convert to fraction form
    98,643,592.80/147,965,389.20 = 53,293,960.80/x
  3. Step 3: Cross multiply
    98,643,592.80x = 147,965,389.20 × 53,293,960.80
  4. Step 4: Simplify right side
    98,643,592.80x = 7,885,661,651,781,542
  5. Step 5: Solve for x
    x = 7,885,661,651,781,542/98,643,592.80
  6. Step 6: Final answer
    x = 79,940,941.20

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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.