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Finding the Fourth Proportional to 78,776,502.90, 118,286,405.55 and 42,944,694.90

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Solution

The fourth proportional to 78,776,502.90, 118,286,405.55 and 42,944,694.90 is: 64,483,360.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,776,502.90 : 118,286,405.55 = 42,944,694.90 : x
  2. Step 2: Convert to fraction form
    78,776,502.90/118,286,405.55 = 42,944,694.90/x
  3. Step 3: Cross multiply
    78,776,502.90x = 118,286,405.55 × 42,944,694.90
  4. Step 4: Simplify right side
    78,776,502.90x = 5,079,773,597,162,416
  5. Step 5: Solve for x
    x = 5,079,773,597,162,416/78,776,502.90
  6. Step 6: Final answer
    x = 64,483,360.01

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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.