Home / 78,787.17-108,727.08-42,977.93

Finding the Fourth Proportional to 78,787.17, 108,727.08 and 42,977.93

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Solution

The fourth proportional to 78,787.17, 108,727.08 and 42,977.93 is: 59,309.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,787.17 : 108,727.08 = 42,977.93 : x
  2. Step 2: Convert to fraction form
    78,787.17/108,727.08 = 42,977.93/x
  3. Step 3: Cross multiply
    78,787.17x = 108,727.08 × 42,977.93
  4. Step 4: Simplify right side
    78,787.17x = 4,672,865,408.55
  5. Step 5: Solve for x
    x = 4,672,865,408.55/78,787.17
  6. Step 6: Final answer
    x = 59,309.98

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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.