Home / 78,012,588-107,657,731.08-43,204,548.72

Finding the Fourth Proportional to 78,012,588, 107,657,731.08 and 43,204,548.72

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Solution

The fourth proportional to 78,012,588, 107,657,731.08 and 43,204,548.72 is: 59,622,476.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,012,588 : 107,657,731.08 = 43,204,548.72 : x
  2. Step 2: Convert to fraction form
    78,012,588/107,657,731.08 = 43,204,548.72/x
  3. Step 3: Cross multiply
    78,012,588x = 107,657,731.08 × 43,204,548.72
  4. Step 4: Simplify right side
    78,012,588x = 4,651,303,687,530,518
  5. Step 5: Solve for x
    x = 4,651,303,687,530,518/78,012,588
  6. Step 6: Final answer
    x = 59,622,476.41

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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.