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Finding the Fourth Proportional to 65,253.69, 90,048.51 and 38,397.87

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Solution

The fourth proportional to 65,253.69, 90,048.51 and 38,397.87 is: 52,988.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,253.69 : 90,048.51 = 38,397.87 : x
  2. Step 2: Convert to fraction form
    65,253.69/90,048.51 = 38,397.87/x
  3. Step 3: Cross multiply
    65,253.69x = 90,048.51 × 38,397.87
  4. Step 4: Simplify right side
    65,253.69x = 3,457,670,980.67
  5. Step 5: Solve for x
    x = 3,457,670,980.67/65,253.69
  6. Step 6: Final answer
    x = 52,988.13

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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.