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Finding the Fourth Proportional to 64,720.77, 89,314.47 and 36,426.45

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Solution

The fourth proportional to 64,720.77, 89,314.47 and 36,426.45 is: 50,268.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,720.77 : 89,314.47 = 36,426.45 : x
  2. Step 2: Convert to fraction form
    64,720.77/89,314.47 = 36,426.45/x
  3. Step 3: Cross multiply
    64,720.77x = 89,314.47 × 36,426.45
  4. Step 4: Simplify right side
    64,720.77x = 3,253,409,075.73
  5. Step 5: Solve for x
    x = 3,253,409,075.73/64,720.77
  6. Step 6: Final answer
    x = 50,268.40

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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.