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Finding the Fourth Proportional to 65,605.32, 90,430.56 and 44,347.68

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Solution

The fourth proportional to 65,605.32, 90,430.56 and 44,347.68 is: 61,128.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,605.32 : 90,430.56 = 44,347.68 : x
  2. Step 2: Convert to fraction form
    65,605.32/90,430.56 = 44,347.68/x
  3. Step 3: Cross multiply
    65,605.32x = 90,430.56 × 44,347.68
  4. Step 4: Simplify right side
    65,605.32x = 4,010,385,537.10
  5. Step 5: Solve for x
    x = 4,010,385,537.10/65,605.32
  6. Step 6: Final answer
    x = 61,128.97

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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.