Home / 86,165.56-118,783.86-57,045.16

Finding the Fourth Proportional to 86,165.56, 118,783.86 and 57,045.16

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Solution

The fourth proportional to 86,165.56, 118,783.86 and 57,045.16 is: 78,639.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,165.56 : 118,783.86 = 57,045.16 : x
  2. Step 2: Convert to fraction form
    86,165.56/118,783.86 = 57,045.16/x
  3. Step 3: Cross multiply
    86,165.56x = 118,783.86 × 57,045.16
  4. Step 4: Simplify right side
    86,165.56x = 6,776,044,299.12
  5. Step 5: Solve for x
    x = 6,776,044,299.12/86,165.56
  6. Step 6: Final answer
    x = 78,639.82

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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.