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Finding the Fourth Proportional to 67,235,101.60, 100,838,655.60 and 28,897,866.40

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Solution

The fourth proportional to 67,235,101.60, 100,838,655.60 and 28,897,866.40 is: 43,340,783.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,235,101.60 : 100,838,655.60 = 28,897,866.40 : x
  2. Step 2: Convert to fraction form
    67,235,101.60/100,838,655.60 = 28,897,866.40/x
  3. Step 3: Cross multiply
    67,235,101.60x = 100,838,655.60 × 28,897,866.40
  4. Step 4: Simplify right side
    67,235,101.60x = 2,914,021,997,484,411.50
  5. Step 5: Solve for x
    x = 2,914,021,997,484,411.50/67,235,101.60
  6. Step 6: Final answer
    x = 43,340,783.73

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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.