Home / 83,639.21-115,393.95-53,442.18

Finding the Fourth Proportional to 83,639.21, 115,393.95 and 53,442.18

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Solution

The fourth proportional to 83,639.21, 115,393.95 and 53,442.18 is: 73,732.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,639.21 : 115,393.95 = 53,442.18 : x
  2. Step 2: Convert to fraction form
    83,639.21/115,393.95 = 53,442.18/x
  3. Step 3: Cross multiply
    83,639.21x = 115,393.95 × 53,442.18
  4. Step 4: Simplify right side
    83,639.21x = 6,166,904,246.81
  5. Step 5: Solve for x
    x = 6,166,904,246.81/83,639.21
  6. Step 6: Final answer
    x = 73,732.22

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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.