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Finding the Fourth Proportional to 65,230.76, 89,994.60 and 39,726.72

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Solution

The fourth proportional to 65,230.76, 89,994.60 and 39,726.72 is: 54,808.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,230.76 : 89,994.60 = 39,726.72 : x
  2. Step 2: Convert to fraction form
    65,230.76/89,994.60 = 39,726.72/x
  3. Step 3: Cross multiply
    65,230.76x = 89,994.60 × 39,726.72
  4. Step 4: Simplify right side
    65,230.76x = 3,575,190,275.71
  5. Step 5: Solve for x
    x = 3,575,190,275.71/65,230.76
  6. Step 6: Final answer
    x = 54,808.35

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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.