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Finding the Fourth Proportional to 64,881.60, 97,322.40 and 40,305.60

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Solution

The fourth proportional to 64,881.60, 97,322.40 and 40,305.60 is: 60,458.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,881.60 : 97,322.40 = 40,305.60 : x
  2. Step 2: Convert to fraction form
    64,881.60/97,322.40 = 40,305.60/x
  3. Step 3: Cross multiply
    64,881.60x = 97,322.40 × 40,305.60
  4. Step 4: Simplify right side
    64,881.60x = 3,922,637,725.44
  5. Step 5: Solve for x
    x = 3,922,637,725.44/64,881.60
  6. Step 6: Final answer
    x = 60,458.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.