Home / 89,336,328.78-123,287,840.10-49,643,711.28

Finding the Fourth Proportional to 89,336,328.78, 123,287,840.10 and 49,643,711.28

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Solution

The fourth proportional to 89,336,328.78, 123,287,840.10 and 49,643,711.28 is: 68,510,381.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,336,328.78 : 123,287,840.10 = 49,643,711.28 : x
  2. Step 2: Convert to fraction form
    89,336,328.78/123,287,840.10 = 49,643,711.28/x
  3. Step 3: Cross multiply
    89,336,328.78x = 123,287,840.10 × 49,643,711.28
  4. Step 4: Simplify right side
    89,336,328.78x = 6,120,465,938,259,206
  5. Step 5: Solve for x
    x = 6,120,465,938,259,206/89,336,328.78
  6. Step 6: Final answer
    x = 68,510,381.18

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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.