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Finding the Fourth Proportional to 66,693.48, 92,039.95 and 38,408.28

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Solution

The fourth proportional to 66,693.48, 92,039.95 and 38,408.28 is: 53,005.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,693.48 : 92,039.95 = 38,408.28 : x
  2. Step 2: Convert to fraction form
    66,693.48/92,039.95 = 38,408.28/x
  3. Step 3: Cross multiply
    66,693.48x = 92,039.95 × 38,408.28
  4. Step 4: Simplify right side
    66,693.48x = 3,535,095,657.60
  5. Step 5: Solve for x
    x = 3,535,095,657.60/66,693.48
  6. Step 6: Final answer
    x = 53,005.12

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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.