Home / 72,730.16-100,253.25-66,628.43

Finding the Fourth Proportional to 72,730.16, 100,253.25 and 66,628.43

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Solution

The fourth proportional to 72,730.16, 100,253.25 and 66,628.43 is: 91,842.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,730.16 : 100,253.25 = 66,628.43 : x
  2. Step 2: Convert to fraction form
    72,730.16/100,253.25 = 66,628.43/x
  3. Step 3: Cross multiply
    72,730.16x = 100,253.25 × 66,628.43
  4. Step 4: Simplify right side
    72,730.16x = 6,679,716,148.63
  5. Step 5: Solve for x
    x = 6,679,716,148.63/72,730.16
  6. Step 6: Final answer
    x = 91,842.46

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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.