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Finding the Fourth Proportional to 76,312.29, 105,207.35 and 64,354.67

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Solution

The fourth proportional to 76,312.29, 105,207.35 and 64,354.67 is: 88,722.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,312.29 : 105,207.35 = 64,354.67 : x
  2. Step 2: Convert to fraction form
    76,312.29/105,207.35 = 64,354.67/x
  3. Step 3: Cross multiply
    76,312.29x = 105,207.35 × 64,354.67
  4. Step 4: Simplify right side
    76,312.29x = 6,770,583,443.01
  5. Step 5: Solve for x
    x = 6,770,583,443.01/76,312.29
  6. Step 6: Final answer
    x = 88,722.06

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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.