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Finding the Fourth Proportional to 65,980,964.70, 98,971,447.05 and 57,477,908.70

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Solution

The fourth proportional to 65,980,964.70, 98,971,447.05 and 57,477,908.70 is: 86,216,863.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,980,964.70 : 98,971,447.05 = 57,477,908.70 : x
  2. Step 2: Convert to fraction form
    65,980,964.70/98,971,447.05 = 57,477,908.70/x
  3. Step 3: Cross multiply
    65,980,964.70x = 98,971,447.05 × 57,477,908.70
  4. Step 4: Simplify right side
    65,980,964.70x = 5,688,671,797,446,784
  5. Step 5: Solve for x
    x = 5,688,671,797,446,784/65,980,964.70
  6. Step 6: Final answer
    x = 86,216,863.05

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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.