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Finding the Fourth Proportional to 81,666.64, 112,671.84 and 45,851.68

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Solution

The fourth proportional to 81,666.64, 112,671.84 and 45,851.68 is: 63,259.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,666.64 : 112,671.84 = 45,851.68 : x
  2. Step 2: Convert to fraction form
    81,666.64/112,671.84 = 45,851.68/x
  3. Step 3: Cross multiply
    81,666.64x = 112,671.84 × 45,851.68
  4. Step 4: Simplify right side
    81,666.64x = 5,166,193,152.69
  5. Step 5: Solve for x
    x = 5,166,193,152.69/81,666.64
  6. Step 6: Final answer
    x = 63,259.53

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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.