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Finding the Fourth Proportional to 76,925.70, 106,119.45 and 66,297.06

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Solution

The fourth proportional to 76,925.70, 106,119.45 and 66,297.06 is: 91,457.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,925.70 : 106,119.45 = 66,297.06 : x
  2. Step 2: Convert to fraction form
    76,925.70/106,119.45 = 66,297.06/x
  3. Step 3: Cross multiply
    76,925.70x = 106,119.45 × 66,297.06
  4. Step 4: Simplify right side
    76,925.70x = 7,035,407,543.82
  5. Step 5: Solve for x
    x = 7,035,407,543.82/76,925.70
  6. Step 6: Final answer
    x = 91,457.18

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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.