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Finding the Fourth Proportional to 65,325.69, 90,123.54 and 38,425.59

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Solution

The fourth proportional to 65,325.69, 90,123.54 and 38,425.59 is: 53,012.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,325.69 : 90,123.54 = 38,425.59 : x
  2. Step 2: Convert to fraction form
    65,325.69/90,123.54 = 38,425.59/x
  3. Step 3: Cross multiply
    65,325.69x = 90,123.54 × 38,425.59
  4. Step 4: Simplify right side
    65,325.69x = 3,463,050,053.29
  5. Step 5: Solve for x
    x = 3,463,050,053.29/65,325.69
  6. Step 6: Final answer
    x = 53,012.07

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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.