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Finding the Fourth Proportional to 72,307.86, 99,733.41 and 66,358.74

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Solution

The fourth proportional to 72,307.86, 99,733.41 and 66,358.74 is: 91,527.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,307.86 : 99,733.41 = 66,358.74 : x
  2. Step 2: Convert to fraction form
    72,307.86/99,733.41 = 66,358.74/x
  3. Step 3: Cross multiply
    72,307.86x = 99,733.41 × 66,358.74
  4. Step 4: Simplify right side
    72,307.86x = 6,618,183,423.50
  5. Step 5: Solve for x
    x = 6,618,183,423.50/72,307.86
  6. Step 6: Final answer
    x = 91,527.86

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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.