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Finding the Fourth Proportional to 50,440, 69,607.20 and 28,089.28

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Solution

The fourth proportional to 50,440, 69,607.20 and 28,089.28 is: 38,763.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,440 : 69,607.20 = 28,089.28 : x
  2. Step 2: Convert to fraction form
    50,440/69,607.20 = 28,089.28/x
  3. Step 3: Cross multiply
    50,440x = 69,607.20 × 28,089.28
  4. Step 4: Simplify right side
    50,440x = 1,955,216,130.82
  5. Step 5: Solve for x
    x = 1,955,216,130.82/50,440
  6. Step 6: Final answer
    x = 38,763.21

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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.