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Finding the Fourth Proportional to 72,483.84, 100,031.07 and 45,276.03

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Solution

The fourth proportional to 72,483.84, 100,031.07 and 45,276.03 is: 62,483.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,483.84 : 100,031.07 = 45,276.03 : x
  2. Step 2: Convert to fraction form
    72,483.84/100,031.07 = 45,276.03/x
  3. Step 3: Cross multiply
    72,483.84x = 100,031.07 × 45,276.03
  4. Step 4: Simplify right side
    72,483.84x = 4,529,010,101.37
  5. Step 5: Solve for x
    x = 4,529,010,101.37/72,483.84
  6. Step 6: Final answer
    x = 62,483.03

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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.