Home / 81,557.20-112,541.37-45,740.29

Finding the Fourth Proportional to 81,557.20, 112,541.37 and 45,740.29

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Solution

The fourth proportional to 81,557.20, 112,541.37 and 45,740.29 is: 63,117.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,557.20 : 112,541.37 = 45,740.29 : x
  2. Step 2: Convert to fraction form
    81,557.20/112,541.37 = 45,740.29/x
  3. Step 3: Cross multiply
    81,557.20x = 112,541.37 × 45,740.29
  4. Step 4: Simplify right side
    81,557.20x = 5,147,674,900.80
  5. Step 5: Solve for x
    x = 5,147,674,900.80/81,557.20
  6. Step 6: Final answer
    x = 63,117.36

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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.