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Finding the Fourth Proportional to 64,381.64, 88,797.84 and 56,410

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Solution

The fourth proportional to 64,381.64, 88,797.84 and 56,410 is: 77,803.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,381.64 : 88,797.84 = 56,410 : x
  2. Step 2: Convert to fraction form
    64,381.64/88,797.84 = 56,410/x
  3. Step 3: Cross multiply
    64,381.64x = 88,797.84 × 56,410
  4. Step 4: Simplify right side
    64,381.64x = 5,009,086,154.40
  5. Step 5: Solve for x
    x = 5,009,086,154.40/64,381.64
  6. Step 6: Final answer
    x = 77,803.02

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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.