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Finding the Fourth Proportional to 80,428.50, 111,007.02 and 46,458.90

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Solution

The fourth proportional to 80,428.50, 111,007.02 and 46,458.90 is: 64,122.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,428.50 : 111,007.02 = 46,458.90 : x
  2. Step 2: Convert to fraction form
    80,428.50/111,007.02 = 46,458.90/x
  3. Step 3: Cross multiply
    80,428.50x = 111,007.02 × 46,458.90
  4. Step 4: Simplify right side
    80,428.50x = 5,157,264,041.48
  5. Step 5: Solve for x
    x = 5,157,264,041.48/80,428.50
  6. Step 6: Final answer
    x = 64,122.35

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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.