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Finding the Fourth Proportional to 65,805.60, 90,754.32 and 46,647.48

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Solution

The fourth proportional to 65,805.60, 90,754.32 and 46,647.48 is: 64,332.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,805.60 : 90,754.32 = 46,647.48 : x
  2. Step 2: Convert to fraction form
    65,805.60/90,754.32 = 46,647.48/x
  3. Step 3: Cross multiply
    65,805.60x = 90,754.32 × 46,647.48
  4. Step 4: Simplify right side
    65,805.60x = 4,233,460,327.11
  5. Step 5: Solve for x
    x = 4,233,460,327.11/65,805.60
  6. Step 6: Final answer
    x = 64,332.83

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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.