Home / 78,727,357.95-118,077,577.77-21,206,177.02

Finding the Fourth Proportional to 78,727,357.95, 118,077,577.77 and 21,206,177.02

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Solution

The fourth proportional to 78,727,357.95, 118,077,577.77 and 21,206,177.02 is: 31,805,640.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,727,357.95 : 118,077,577.77 = 21,206,177.02 : x
  2. Step 2: Convert to fraction form
    78,727,357.95/118,077,577.77 = 21,206,177.02/x
  3. Step 3: Cross multiply
    78,727,357.95x = 118,077,577.77 × 21,206,177.02
  4. Step 4: Simplify right side
    78,727,357.95x = 2,503,974,016,283,436.50
  5. Step 5: Solve for x
    x = 2,503,974,016,283,436.50/78,727,357.95
  6. Step 6: Final answer
    x = 31,805,640.14

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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.