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Finding the Fourth Proportional to 78,894,141.80, 118,341,212.70 and 46,561,533.80

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Solution

The fourth proportional to 78,894,141.80, 118,341,212.70 and 46,561,533.80 is: 69,842,300.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,894,141.80 : 118,341,212.70 = 46,561,533.80 : x
  2. Step 2: Convert to fraction form
    78,894,141.80/118,341,212.70 = 46,561,533.80/x
  3. Step 3: Cross multiply
    78,894,141.80x = 118,341,212.70 × 46,561,533.80
  4. Step 4: Simplify right side
    78,894,141.80x = 5,510,148,375,064,039
  5. Step 5: Solve for x
    x = 5,510,148,375,064,039/78,894,141.80
  6. Step 6: Final answer
    x = 69,842,300.70

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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.