Home / 85,118.32-117,477.28-64,937.12

Finding the Fourth Proportional to 85,118.32, 117,477.28 and 64,937.12

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Solution

The fourth proportional to 85,118.32, 117,477.28 and 64,937.12 is: 89,623.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,118.32 : 117,477.28 = 64,937.12 : x
  2. Step 2: Convert to fraction form
    85,118.32/117,477.28 = 64,937.12/x
  3. Step 3: Cross multiply
    85,118.32x = 117,477.28 × 64,937.12
  4. Step 4: Simplify right side
    85,118.32x = 7,628,636,228.63
  5. Step 5: Solve for x
    x = 7,628,636,228.63/85,118.32
  6. Step 6: Final answer
    x = 89,623.91

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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.