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Finding the Fourth Proportional to 99,742,752.80, 149,708,607.60 and 61,479,000.80

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Solution

The fourth proportional to 99,742,752.80, 149,708,607.60 and 61,479,000.80 is: 92,276,735.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,742,752.80 : 149,708,607.60 = 61,479,000.80 : x
  2. Step 2: Convert to fraction form
    99,742,752.80/149,708,607.60 = 61,479,000.80/x
  3. Step 3: Cross multiply
    99,742,752.80x = 149,708,607.60 × 61,479,000.80
  4. Step 4: Simplify right side
    99,742,752.80x = 9,203,935,606,407,286
  5. Step 5: Solve for x
    x = 9,203,935,606,407,286/99,742,752.80
  6. Step 6: Final answer
    x = 92,276,735.38

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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.