Home / 91,312.74-136,943.19-28,981.62

Finding the Fourth Proportional to 91,312.74, 136,943.19 and 28,981.62

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Solution

The fourth proportional to 91,312.74, 136,943.19 and 28,981.62 is: 43,464.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,312.74 : 136,943.19 = 28,981.62 : x
  2. Step 2: Convert to fraction form
    91,312.74/136,943.19 = 28,981.62/x
  3. Step 3: Cross multiply
    91,312.74x = 136,943.19 × 28,981.62
  4. Step 4: Simplify right side
    91,312.74x = 3,968,835,494.17
  5. Step 5: Solve for x
    x = 3,968,835,494.17/91,312.74
  6. Step 6: Final answer
    x = 43,464.20

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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.