Home / 77,098.90-106,397.15-42,643.05

Finding the Fourth Proportional to 77,098.90, 106,397.15 and 42,643.05

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Solution

The fourth proportional to 77,098.90, 106,397.15 and 42,643.05 is: 58,847.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,098.90 : 106,397.15 = 42,643.05 : x
  2. Step 2: Convert to fraction form
    77,098.90/106,397.15 = 42,643.05/x
  3. Step 3: Cross multiply
    77,098.90x = 106,397.15 × 42,643.05
  4. Step 4: Simplify right side
    77,098.90x = 4,537,099,266.49
  5. Step 5: Solve for x
    x = 4,537,099,266.49/77,098.90
  6. Step 6: Final answer
    x = 58,847.78

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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.