Home / 81,420.87-112,360.19-45,611.18

Finding the Fourth Proportional to 81,420.87, 112,360.19 and 45,611.18

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Solution

The fourth proportional to 81,420.87, 112,360.19 and 45,611.18 is: 62,943.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,420.87 : 112,360.19 = 45,611.18 : x
  2. Step 2: Convert to fraction form
    81,420.87/112,360.19 = 45,611.18/x
  3. Step 3: Cross multiply
    81,420.87x = 112,360.19 × 45,611.18
  4. Step 4: Simplify right side
    81,420.87x = 5,124,880,061.07
  5. Step 5: Solve for x
    x = 5,124,880,061.07/81,420.87
  6. Step 6: Final answer
    x = 62,943.08

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1.5x scale

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.