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Finding the Fourth Proportional to 66,465.60, 99,669.60 and 27,009.60

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Solution

The fourth proportional to 66,465.60, 99,669.60 and 27,009.60 is: 40,502.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,465.60 : 99,669.60 = 27,009.60 : x
  2. Step 2: Convert to fraction form
    66,465.60/99,669.60 = 27,009.60/x
  3. Step 3: Cross multiply
    66,465.60x = 99,669.60 × 27,009.60
  4. Step 4: Simplify right side
    66,465.60x = 2,692,036,028.16
  5. Step 5: Solve for x
    x = 2,692,036,028.16/66,465.60
  6. Step 6: Final answer
    x = 40,502.70

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1.5x scale

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.