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Finding the Fourth Proportional to 66,475.68, 99,737.36 and 28,509.05

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Solution

The fourth proportional to 66,475.68, 99,737.36 and 28,509.05 is: 42,773.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,475.68 : 99,737.36 = 28,509.05 : x
  2. Step 2: Convert to fraction form
    66,475.68/99,737.36 = 28,509.05/x
  3. Step 3: Cross multiply
    66,475.68x = 99,737.36 × 28,509.05
  4. Step 4: Simplify right side
    66,475.68x = 2,843,417,383.11
  5. Step 5: Solve for x
    x = 2,843,417,383.11/66,475.68
  6. Step 6: Final answer
    x = 42,773.80

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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.