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Finding the Fourth Proportional to 48,077.76, 72,116.64 and 45,518.88

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Solution

The fourth proportional to 48,077.76, 72,116.64 and 45,518.88 is: 68,278.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,077.76 : 72,116.64 = 45,518.88 : x
  2. Step 2: Convert to fraction form
    48,077.76/72,116.64 = 45,518.88/x
  3. Step 3: Cross multiply
    48,077.76x = 72,116.64 × 45,518.88
  4. Step 4: Simplify right side
    48,077.76x = 3,282,668,682.16
  5. Step 5: Solve for x
    x = 3,282,668,682.16/48,077.76
  6. Step 6: Final answer
    x = 68,278.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.