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Finding the Fourth Proportional to 64,447,807.20, 96,671,710.80 and 38,967,410.40

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Solution

The fourth proportional to 64,447,807.20, 96,671,710.80 and 38,967,410.40 is: 58,451,115.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,447,807.20 : 96,671,710.80 = 38,967,410.40 : x
  2. Step 2: Convert to fraction form
    64,447,807.20/96,671,710.80 = 38,967,410.40/x
  3. Step 3: Cross multiply
    64,447,807.20x = 96,671,710.80 × 38,967,410.40
  4. Step 4: Simplify right side
    64,447,807.20x = 3,767,046,228,813,712
  5. Step 5: Solve for x
    x = 3,767,046,228,813,712/64,447,807.20
  6. Step 6: Final answer
    x = 58,451,115.60

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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.