Home / 77,898.06-116,810.10-40,420.62

Finding the Fourth Proportional to 77,898.06, 116,810.10 and 40,420.62

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Solution

The fourth proportional to 77,898.06, 116,810.10 and 40,420.62 is: 60,611.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,898.06 : 116,810.10 = 40,420.62 : x
  2. Step 2: Convert to fraction form
    77,898.06/116,810.10 = 40,420.62/x
  3. Step 3: Cross multiply
    77,898.06x = 116,810.10 × 40,420.62
  4. Step 4: Simplify right side
    77,898.06x = 4,721,536,664.26
  5. Step 5: Solve for x
    x = 4,721,536,664.26/77,898.06
  6. Step 6: Final answer
    x = 60,611.74

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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.