Home / 77,679,665.88-107,197,411.50-42,872,356.20

Finding the Fourth Proportional to 77,679,665.88, 107,197,411.50 and 42,872,356.20

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Solution

The fourth proportional to 77,679,665.88, 107,197,411.50 and 42,872,356.20 is: 59,163,560.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,679,665.88 : 107,197,411.50 = 42,872,356.20 : x
  2. Step 2: Convert to fraction form
    77,679,665.88/107,197,411.50 = 42,872,356.20/x
  3. Step 3: Cross multiply
    77,679,665.88x = 107,197,411.50 × 42,872,356.20
  4. Step 4: Simplify right side
    77,679,665.88x = 4,595,805,609,545,977
  5. Step 5: Solve for x
    x = 4,595,805,609,545,977/77,679,665.88
  6. Step 6: Final answer
    x = 59,163,560.47

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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.