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Finding the Fourth Proportional to 66,600, 99,931.01 and 29,155.14

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Solution

The fourth proportional to 66,600, 99,931.01 and 29,155.14 is: 43,746.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,600 : 99,931.01 = 29,155.14 : x
  2. Step 2: Convert to fraction form
    66,600/99,931.01 = 29,155.14/x
  3. Step 3: Cross multiply
    66,600x = 99,931.01 × 29,155.14
  4. Step 4: Simplify right side
    66,600x = 2,913,502,441.12
  5. Step 5: Solve for x
    x = 2,913,502,441.12/66,600
  6. Step 6: Final answer
    x = 43,746.28

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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.