Home / 76,447.12-105,446.76-48,129.04

Finding the Fourth Proportional to 76,447.12, 105,446.76 and 48,129.04

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Solution

The fourth proportional to 76,447.12, 105,446.76 and 48,129.04 is: 66,386.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,447.12 : 105,446.76 = 48,129.04 : x
  2. Step 2: Convert to fraction form
    76,447.12/105,446.76 = 48,129.04/x
  3. Step 3: Cross multiply
    76,447.12x = 105,446.76 × 48,129.04
  4. Step 4: Simplify right side
    76,447.12x = 5,075,051,329.91
  5. Step 5: Solve for x
    x = 5,075,051,329.91/76,447.12
  6. Step 6: Final answer
    x = 66,386.43

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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.