Home / 287,863,046.31-431,795,828.35-91,127,420.14

Finding the Fourth Proportional to 287,863,046.31, 431,795,828.35 and 91,127,420.14

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Solution

The fourth proportional to 287,863,046.31, 431,795,828.35 and 91,127,420.14 is: 136,691,528.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,863,046.31 : 431,795,828.35 = 91,127,420.14 : x
  2. Step 2: Convert to fraction form
    287,863,046.31/431,795,828.35 = 91,127,420.14/x
  3. Step 3: Cross multiply
    287,863,046.31x = 431,795,828.35 × 91,127,420.14
  4. Step 4: Simplify right side
    287,863,046.31x = 39,348,439,864,749,776
  5. Step 5: Solve for x
    x = 39,348,439,864,749,776/287,863,046.31
  6. Step 6: Final answer
    x = 136,691,528.73

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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.