Home / 81,521.84-112,505.15-61,342.92

Finding the Fourth Proportional to 81,521.84, 112,505.15 and 61,342.92

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Solution

The fourth proportional to 81,521.84, 112,505.15 and 61,342.92 is: 84,657.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,521.84 : 112,505.15 = 61,342.92 : x
  2. Step 2: Convert to fraction form
    81,521.84/112,505.15 = 61,342.92/x
  3. Step 3: Cross multiply
    81,521.84x = 112,505.15 × 61,342.92
  4. Step 4: Simplify right side
    81,521.84x = 6,901,394,569.40
  5. Step 5: Solve for x
    x = 6,901,394,569.40/81,521.84
  6. Step 6: Final answer
    x = 84,657.00

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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.