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Finding the Fourth Proportional to 72,465.70, 100,051.77 and 45,283.30

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Solution

The fourth proportional to 72,465.70, 100,051.77 and 45,283.30 is: 62,521.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,465.70 : 100,051.77 = 45,283.30 : x
  2. Step 2: Convert to fraction form
    72,465.70/100,051.77 = 45,283.30/x
  3. Step 3: Cross multiply
    72,465.70x = 100,051.77 × 45,283.30
  4. Step 4: Simplify right side
    72,465.70x = 4,530,674,316.44
  5. Step 5: Solve for x
    x = 4,530,674,316.44/72,465.70
  6. Step 6: Final answer
    x = 62,521.64

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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.