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Finding the Fourth Proportional to 92,881.61, 128,215.85 and 62,707.79

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Solution

The fourth proportional to 92,881.61, 128,215.85 and 62,707.79 is: 86,563.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,881.61 : 128,215.85 = 62,707.79 : x
  2. Step 2: Convert to fraction form
    92,881.61/128,215.85 = 62,707.79/x
  3. Step 3: Cross multiply
    92,881.61x = 128,215.85 × 62,707.79
  4. Step 4: Simplify right side
    92,881.61x = 8,040,131,641.85
  5. Step 5: Solve for x
    x = 8,040,131,641.85/92,881.61
  6. Step 6: Final answer
    x = 86,563.23

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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.