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Finding the Fourth Proportional to 72,670.98, 100,276.95 and 42,049.32

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Solution

The fourth proportional to 72,670.98, 100,276.95 and 42,049.32 is: 58,022.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,670.98 : 100,276.95 = 42,049.32 : x
  2. Step 2: Convert to fraction form
    72,670.98/100,276.95 = 42,049.32/x
  3. Step 3: Cross multiply
    72,670.98x = 100,276.95 × 42,049.32
  4. Step 4: Simplify right side
    72,670.98x = 4,216,577,559.17
  5. Step 5: Solve for x
    x = 4,216,577,559.17/72,670.98
  6. Step 6: Final answer
    x = 58,022.85

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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.