Home / 78,947,154.63-118,953,687.97-65,415,253.73

Finding the Fourth Proportional to 78,947,154.63, 118,953,687.97 and 65,415,253.73

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Solution

The fourth proportional to 78,947,154.63, 118,953,687.97 and 65,415,253.73 is: 98,564,485.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,947,154.63 : 118,953,687.97 = 65,415,253.73 : x
  2. Step 2: Convert to fraction form
    78,947,154.63/118,953,687.97 = 65,415,253.73/x
  3. Step 3: Cross multiply
    78,947,154.63x = 118,953,687.97 × 65,415,253.73
  4. Step 4: Simplify right side
    78,947,154.63x = 7,781,385,680,347,616
  5. Step 5: Solve for x
    x = 7,781,385,680,347,616/78,947,154.63
  6. Step 6: Final answer
    x = 98,564,485.53

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.