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Finding the Fourth Proportional to 99,657,697.70, 149,486,546.55 and 45,909,985.70

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Solution

The fourth proportional to 99,657,697.70, 149,486,546.55 and 45,909,985.70 is: 68,864,978.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,657,697.70 : 149,486,546.55 = 45,909,985.70 : x
  2. Step 2: Convert to fraction form
    99,657,697.70/149,486,546.55 = 45,909,985.70/x
  3. Step 3: Cross multiply
    99,657,697.70x = 149,486,546.55 × 45,909,985.70
  4. Step 4: Simplify right side
    99,657,697.70x = 6,862,925,214,452,885
  5. Step 5: Solve for x
    x = 6,862,925,214,452,885/99,657,697.70
  6. Step 6: Final answer
    x = 68,864,978.55

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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.