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Finding the Fourth Proportional to 72,642.76, 100,295.43 and 45,460.17

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Solution

The fourth proportional to 72,642.76, 100,295.43 and 45,460.17 is: 62,765.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,642.76 : 100,295.43 = 45,460.17 : x
  2. Step 2: Convert to fraction form
    72,642.76/100,295.43 = 45,460.17/x
  3. Step 3: Cross multiply
    72,642.76x = 100,295.43 × 45,460.17
  4. Step 4: Simplify right side
    72,642.76x = 4,559,447,298.02
  5. Step 5: Solve for x
    x = 4,559,447,298.02/72,642.76
  6. Step 6: Final answer
    x = 62,765.34

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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.