Home / 72,420.62-99,936.30-42,210.86

Finding the Fourth Proportional to 72,420.62, 99,936.30 and 42,210.86

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Solution

The fourth proportional to 72,420.62, 99,936.30 and 42,210.86 is: 58,248.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,420.62 : 99,936.30 = 42,210.86 : x
  2. Step 2: Convert to fraction form
    72,420.62/99,936.30 = 42,210.86/x
  3. Step 3: Cross multiply
    72,420.62x = 99,936.30 × 42,210.86
  4. Step 4: Simplify right side
    72,420.62x = 4,218,397,418.06
  5. Step 5: Solve for x
    x = 4,218,397,418.06/72,420.62
  6. Step 6: Final answer
    x = 58,248.57

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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.