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Finding the Fourth Proportional to 76,742,410.80, 114,924,659.40 and 36,305,655.60

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Solution

The fourth proportional to 76,742,410.80, 114,924,659.40 and 36,305,655.60 is: 54,369,090.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,742,410.80 : 114,924,659.40 = 36,305,655.60 : x
  2. Step 2: Convert to fraction form
    76,742,410.80/114,924,659.40 = 36,305,655.60/x
  3. Step 3: Cross multiply
    76,742,410.80x = 114,924,659.40 × 36,305,655.60
  4. Step 4: Simplify right side
    76,742,410.80x = 4,172,415,104,123,703
  5. Step 5: Solve for x
    x = 4,172,415,104,123,703/76,742,410.80
  6. Step 6: Final answer
    x = 54,369,090.84

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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.