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Finding the Fourth Proportional to 72,050.85, 108,312.68 and 66,848.67

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Solution

The fourth proportional to 72,050.85, 108,312.68 and 66,848.67 is: 100,492.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,050.85 : 108,312.68 = 66,848.67 : x
  2. Step 2: Convert to fraction form
    72,050.85/108,312.68 = 66,848.67/x
  3. Step 3: Cross multiply
    72,050.85x = 108,312.68 × 66,848.67
  4. Step 4: Simplify right side
    72,050.85x = 7,240,558,769.26
  5. Step 5: Solve for x
    x = 7,240,558,769.26/72,050.85
  6. Step 6: Final answer
    x = 100,492.34

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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.