Home / 74,277.60-102,512.16-42,439.20

Finding the Fourth Proportional to 74,277.60, 102,512.16 and 42,439.20

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Solution

The fourth proportional to 74,277.60, 102,512.16 and 42,439.20 is: 58,571.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,277.60 : 102,512.16 = 42,439.20 : x
  2. Step 2: Convert to fraction form
    74,277.60/102,512.16 = 42,439.20/x
  3. Step 3: Cross multiply
    74,277.60x = 102,512.16 × 42,439.20
  4. Step 4: Simplify right side
    74,277.60x = 4,350,534,060.67
  5. Step 5: Solve for x
    x = 4,350,534,060.67/74,277.60
  6. Step 6: Final answer
    x = 58,571.28

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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.