Home / 81,715.32-112,763.34-45,415.08

Finding the Fourth Proportional to 81,715.32, 112,763.34 and 45,415.08

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Solution

The fourth proportional to 81,715.32, 112,763.34 and 45,415.08 is: 62,670.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,715.32 : 112,763.34 = 45,415.08 : x
  2. Step 2: Convert to fraction form
    81,715.32/112,763.34 = 45,415.08/x
  3. Step 3: Cross multiply
    81,715.32x = 112,763.34 × 45,415.08
  4. Step 4: Simplify right side
    81,715.32x = 5,121,156,107.17
  5. Step 5: Solve for x
    x = 5,121,156,107.17/81,715.32
  6. Step 6: Final answer
    x = 62,670.70

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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.