Home / 30,881,261.16-42,611,726.88-18,488,385.12

Finding the Fourth Proportional to 30,881,261.16, 42,611,726.88 and 18,488,385.12

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Solution

The fourth proportional to 30,881,261.16, 42,611,726.88 and 18,488,385.12 is: 25,511,329.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,881,261.16 : 42,611,726.88 = 18,488,385.12 : x
  2. Step 2: Convert to fraction form
    30,881,261.16/42,611,726.88 = 18,488,385.12/x
  3. Step 3: Cross multiply
    30,881,261.16x = 42,611,726.88 × 18,488,385.12
  4. Step 4: Simplify right side
    30,881,261.16x = 787,822,017,185,696.12
  5. Step 5: Solve for x
    x = 787,822,017,185,696.12/30,881,261.16
  6. Step 6: Final answer
    x = 25,511,329.12

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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.