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Finding the Fourth Proportional to 111,430.96, 153,771.95 and 62,371.89

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Solution

The fourth proportional to 111,430.96, 153,771.95 and 62,371.89 is: 86,071.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,430.96 : 153,771.95 = 62,371.89 : x
  2. Step 2: Convert to fraction form
    111,430.96/153,771.95 = 62,371.89/x
  3. Step 3: Cross multiply
    111,430.96x = 153,771.95 × 62,371.89
  4. Step 4: Simplify right side
    111,430.96x = 9,591,047,306.42
  5. Step 5: Solve for x
    x = 9,591,047,306.42/111,430.96
  6. Step 6: Final answer
    x = 86,071.66

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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.