Home / 76,337.16-105,110.64-66,247.80

Finding the Fourth Proportional to 76,337.16, 105,110.64 and 66,247.80

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Solution

The fourth proportional to 76,337.16, 105,110.64 and 66,247.80 is: 91,218.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,337.16 : 105,110.64 = 66,247.80 : x
  2. Step 2: Convert to fraction form
    76,337.16/105,110.64 = 66,247.80/x
  3. Step 3: Cross multiply
    76,337.16x = 105,110.64 × 66,247.80
  4. Step 4: Simplify right side
    76,337.16x = 6,963,348,656.59
  5. Step 5: Solve for x
    x = 6,963,348,656.59/76,337.16
  6. Step 6: Final answer
    x = 91,218.34

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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.