Home / 65,296.16-90,127.94-42,638.66

Finding the Fourth Proportional to 65,296.16, 90,127.94 and 42,638.66

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Solution

The fourth proportional to 65,296.16, 90,127.94 and 42,638.66 is: 58,853.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,296.16 : 90,127.94 = 42,638.66 : x
  2. Step 2: Convert to fraction form
    65,296.16/90,127.94 = 42,638.66/x
  3. Step 3: Cross multiply
    65,296.16x = 90,127.94 × 42,638.66
  4. Step 4: Simplify right side
    65,296.16x = 3,842,934,590.16
  5. Step 5: Solve for x
    x = 3,842,934,590.16/65,296.16
  6. Step 6: Final answer
    x = 58,853.91

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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.