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Finding the Fourth Proportional to 48,007.70, 72,011.55 and 45,934.10

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Solution

The fourth proportional to 48,007.70, 72,011.55 and 45,934.10 is: 68,901.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,007.70 : 72,011.55 = 45,934.10 : x
  2. Step 2: Convert to fraction form
    48,007.70/72,011.55 = 45,934.10/x
  3. Step 3: Cross multiply
    48,007.70x = 72,011.55 × 45,934.10
  4. Step 4: Simplify right side
    48,007.70x = 3,307,785,738.86
  5. Step 5: Solve for x
    x = 3,307,785,738.86/48,007.70
  6. Step 6: Final answer
    x = 68,901.15

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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.