Home / 87,757,639.70-131,636,459.55-42,408,007.70

Finding the Fourth Proportional to 87,757,639.70, 131,636,459.55 and 42,408,007.70

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Solution

The fourth proportional to 87,757,639.70, 131,636,459.55 and 42,408,007.70 is: 63,612,011.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,757,639.70 : 131,636,459.55 = 42,408,007.70 : x
  2. Step 2: Convert to fraction form
    87,757,639.70/131,636,459.55 = 42,408,007.70/x
  3. Step 3: Cross multiply
    87,757,639.70x = 131,636,459.55 × 42,408,007.70
  4. Step 4: Simplify right side
    87,757,639.70x = 5,582,439,990,197,139
  5. Step 5: Solve for x
    x = 5,582,439,990,197,139/87,757,639.70
  6. Step 6: Final answer
    x = 63,612,011.55

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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.