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Finding the Fourth Proportional to 65,334.78, 90,165.93 and 38,495.18

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Solution

The fourth proportional to 65,334.78, 90,165.93 and 38,495.18 is: 53,125.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,334.78 : 90,165.93 = 38,495.18 : x
  2. Step 2: Convert to fraction form
    65,334.78/90,165.93 = 38,495.18/x
  3. Step 3: Cross multiply
    65,334.78x = 90,165.93 × 38,495.18
  4. Step 4: Simplify right side
    65,334.78x = 3,470,953,254.39
  5. Step 5: Solve for x
    x = 3,470,953,254.39/65,334.78
  6. Step 6: Final answer
    x = 53,125.66

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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.