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Finding the Fourth Proportional to 76,441.04, 105,300.36 and 65,074.04

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Solution

The fourth proportional to 76,441.04, 105,300.36 and 65,074.04 is: 89,641.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,441.04 : 105,300.36 = 65,074.04 : x
  2. Step 2: Convert to fraction form
    76,441.04/105,300.36 = 65,074.04/x
  3. Step 3: Cross multiply
    76,441.04x = 105,300.36 × 65,074.04
  4. Step 4: Simplify right side
    76,441.04x = 6,852,319,838.65
  5. Step 5: Solve for x
    x = 6,852,319,838.65/76,441.04
  6. Step 6: Final answer
    x = 89,641.90

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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.