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Finding the Fourth Proportional to 75,430.68, 104,009 and 48,170.94

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Solution

The fourth proportional to 75,430.68, 104,009 and 48,170.94 is: 66,421.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,430.68 : 104,009 = 48,170.94 : x
  2. Step 2: Convert to fraction form
    75,430.68/104,009 = 48,170.94/x
  3. Step 3: Cross multiply
    75,430.68x = 104,009 × 48,170.94
  4. Step 4: Simplify right side
    75,430.68x = 5,010,211,298.46
  5. Step 5: Solve for x
    x = 5,010,211,298.46/75,430.68
  6. Step 6: Final answer
    x = 66,421.40

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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.