Home / 68,990.04-103,557.43-61,142.76

Finding the Fourth Proportional to 68,990.04, 103,557.43 and 61,142.76

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Solution

The fourth proportional to 68,990.04, 103,557.43 and 61,142.76 is: 91,778.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,990.04 : 103,557.43 = 61,142.76 : x
  2. Step 2: Convert to fraction form
    68,990.04/103,557.43 = 61,142.76/x
  3. Step 3: Cross multiply
    68,990.04x = 103,557.43 × 61,142.76
  4. Step 4: Simplify right side
    68,990.04x = 6,331,787,088.71
  5. Step 5: Solve for x
    x = 6,331,787,088.71/68,990.04
  6. Step 6: Final answer
    x = 91,778.28

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1.5x scale

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.