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Finding the Fourth Proportional to 99,654,430.60, 149,481,645.90 and 56,607,709.60

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Solution

The fourth proportional to 99,654,430.60, 149,481,645.90 and 56,607,709.60 is: 84,911,564.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,654,430.60 : 149,481,645.90 = 56,607,709.60 : x
  2. Step 2: Convert to fraction form
    99,654,430.60/149,481,645.90 = 56,607,709.60/x
  3. Step 3: Cross multiply
    99,654,430.60x = 149,481,645.90 × 56,607,709.60
  4. Step 4: Simplify right side
    99,654,430.60x = 8,461,813,601,637,231
  5. Step 5: Solve for x
    x = 8,461,813,601,637,231/99,654,430.60
  6. Step 6: Final answer
    x = 84,911,564.40

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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.