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Finding the Fourth Proportional to 76,466.94, 105,520.74 and 42,477.60

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Solution

The fourth proportional to 76,466.94, 105,520.74 and 42,477.60 is: 58,617.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,466.94 : 105,520.74 = 42,477.60 : x
  2. Step 2: Convert to fraction form
    76,466.94/105,520.74 = 42,477.60/x
  3. Step 3: Cross multiply
    76,466.94x = 105,520.74 × 42,477.60
  4. Step 4: Simplify right side
    76,466.94x = 4,482,267,785.42
  5. Step 5: Solve for x
    x = 4,482,267,785.42/76,466.94
  6. Step 6: Final answer
    x = 58,617.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.