Home / 81,661.04-112,681.79-47,661.74

Finding the Fourth Proportional to 81,661.04, 112,681.79 and 47,661.74

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Solution

The fourth proportional to 81,661.04, 112,681.79 and 47,661.74 is: 65,767.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,661.04 : 112,681.79 = 47,661.74 : x
  2. Step 2: Convert to fraction form
    81,661.04/112,681.79 = 47,661.74/x
  3. Step 3: Cross multiply
    81,661.04x = 112,681.79 × 47,661.74
  4. Step 4: Simplify right side
    81,661.04x = 5,370,609,376.00
  5. Step 5: Solve for x
    x = 5,370,609,376.00/81,661.04
  6. Step 6: Final answer
    x = 65,767.09

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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.